[telemetry] Page set-level attributes.

Page attributes cascade from page sets, with the page attribute having priority. This small change can eliminate most of the redundancy in the page sets.

R=marja@chromium.org,nduca@chromium.org
BUG=None.
TEST=None.

Review URL: https://codereview.chromium.org/13414005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@192096 0039d316-1c4b-4281-b951-d872f2087c98

10 files changed, 1074 insertions, 4351 deletions

diff --git a/tools/perf/page_sets/2012Q3.json b/tools/perf/page_sets/2012Q3.json
index 2ac6949..5d100fe 100644
--- a/tools/perf/page_sets/2012Q3.json
+++ b/tools/perf/page_sets/2012Q3.json
@@ -2,1096 +2,226 @@
   "description": "Pages hand-picked from top-lists in Q32012.",
   "archive_data_file": "../data/2012Q3.json",
   "credentials_path": "../data/credentials.json",
+  "smoothness": { "action": "scroll" },
+  "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 },
   "pages": [
-    {
-      "url": "http://www.facebook.com/barackobama",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "https://www.google.com/search?q=barack%20obama",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://youtube.com",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://yahoo.com",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://www.baidu.com/s?wd=barack+obama",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://en.wikipedia.org/wiki/Wikipedia",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://qq.com",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://www.amazon.com/Kindle-Fire-Amazon-Tablet/dp/B0051VVOB2",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://googleblog.blogspot.com/",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://taobao.com",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://www.linkedin.com/in/linustorvalds",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://yahoo.co.jp",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://sina.com.cn",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://msn.com",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://yandex.ru/yandsearch?text=barack+obama",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://translation.babylon.com/",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://www.bing.com/search?q=barack+obama",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://wordpress.org/news/",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://www.ebay.com/sch/i.html?_nkw=antiques",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://163.com",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://www.soso.com/q?w=barack+obama",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://www.microsoft.com/en-us/default.aspx",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://go.mail.ru/search?mailru=1&mg=1&q=barack+obama",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://vk.com/id118712387",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://staff.tumblr.com/",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://sohu.com",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://sfbay.craigslist.org/mis/",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://www.ask.com/web?q=barack+obama&search=&qsrc=0&o=0&l=dir",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://www.apple.com/ipodtouch/",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://blog.pinterest.com/",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://pinterest.com/backdrophome/",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://paypal.com",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://bbc.co.uk",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://www.avg.com/us-en/avg-premium-security",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://googlesystem.blogspot.com/",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://tudou.com",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://blog.fc2.com/en/",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://imdb.com",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://youku.com",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://www.flickr.com/photos/thomashawk/",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://www.flickr.com/photos/thomashawk/sets/72157600284219965/detail/",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://search.yahoo.com/search?ei=UTF-8&trackingType=go_search_home&p=barack+obama&fr=hsusgo1&sa.x=0&sa.y=0",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://www.conduit.com/",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://ifeng.com",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://tmall.com",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://hao123.com",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://aol.com",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://zedo.com",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://search.mywebsearch.com/mywebsearch/GGmain.jhtml?searchfor=barack+obama",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://cnn.com",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://portal.ebay.de/deutschland-schraubt-angebote",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://www.adobe.com/products/photoshopfamily.html?promoid=JOLIW",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://global.rakuten.com/us/",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://laundry.about.com/od/kidsandlaundry/f/How-Do-I-Wash-A-Backpack.htm",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://thepiratebay.se/search/barack%20obama/0/99/0",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://360buy.com",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://huffingtonpost.com",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://alibaba.com",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://chinaz.com",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://www.sogou.com/web?query=barack+obama",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://www.amazon.de/gp/product/B0051QVF7A/ref=amb_link_170625867_1/275-4711375-4099801?ie=UTF8&nav_sdd=aps&pf_rd_m=A3JWKAKR8XB7XF&pf_rd_s=center-1&pf_rd_r=1C0XDBPB12WHDM63V11R&pf_rd_t=101&pf_rd_p=320475427&pf_rd_i=301128",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://google.pl",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://mediafire.com",
-      "smoothness": { "action": "scroll" },
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-    },
-    {
-      "url": "http://espn.go.com",
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-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://uol.com.br",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://www.godaddy.com/products/secure-hosting.aspx?ci=72738",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://imgur.com/gallery/b90ZE",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://home.alipay.com/bank/paymentKJ.htm",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://amazon.co.jp",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://stackoverflow.com/questions/11227809/why-is-processing-a-sorted-array-faster-than-an-unsorted-array",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://www.google.com/doubleclick/",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://search.4shared.com/q/CCAD/1/barack%20obama",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
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-      "url": "http://dailymotion.com",
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-    },
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-      "smoothness": { "action": "scroll" },
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-    },
-    {
-      "url": "http://instagram.com/developer/",
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-    {
-      "url": "http://wordpress.org/showcase/",
-      "smoothness": { "action": "scroll" },
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-    },
-    {
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-      "smoothness": { "action": "scroll" },
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-    },
-    {
-      "url": "http://wigetmedia.com/advertisers",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://www.search-results.com/web?&q=barack%20obama",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://cnet.com",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://nytimes.com",
-      "smoothness": { "action": "scroll" },
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-    },
-    {
-      "url": "http://torrentz.eu/search?f=barack+obama",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
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-      "smoothness": { "action": "scroll" },
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-    {
-      "url": "http://douban.com",
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-    },
-    {
-      "url": "http://www.weather.com/weather/right-now/Mountain+View+CA+94043",
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-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
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-      "url": "http://dailymail.co.uk",
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-    },
-    {
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-      "smoothness": { "action": "scroll" },
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-    {
-      "url": "http://ehow.com",
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-    },
-    {
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-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://www.bankofamerica.com/deposits/checksave/index.cfm?template=check_eBanking",
-      "smoothness": { "action": "scroll" },
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-    },
-    {
-      "url": "http://vimeo.com",
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-    },
-    {
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-    },
-    {
-      "url": "http://indiatimes.com",
-      "smoothness": { "action": "scroll" },
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-    },
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-    },
-    {
-      "url": "http://reddit.com",
-      "smoothness": { "action": "scroll" },
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-    {
-      "url": "http://aweber.com",
-      "smoothness": { "action": "scroll" },
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-    },
-    {
-      "url": "http://warriorforum.com",
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-    },
-    {
-      "url": "http://spiegel.de",
-      "smoothness": { "action": "scroll" },
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-      "url": "http://pconline.com.cn",
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-      "smoothness": { "action": "scroll" },
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-    },
-    {
-      "url": "http://booking.com",
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-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
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-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://www.target.com/c/women/-/N-5xtd3#?lnk=nav_t_spc_1_0",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://dianxin.cn",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://www.aizhan.com/siteall/www.youboy.com/",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://veiculos-home.mercadolivre.com.br/",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://kakaku.com",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://flipkart.com",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    },
-    {
-      "url": "http://paipai.com",
-      "smoothness": { "action": "scroll" },
-      "stress_memory": { "action": "reload", "wait_seconds": 1, "repeat": 3 }
-    }
+    { "url": "http://www.facebook.com/barackobama" },
+    { "url": "https://www.google.com/search?q=barack%20obama" },
+    { "url": "http://youtube.com" },
+    { "url": "http://yahoo.com" },
+    { "url": "http://www.baidu.com/s?wd=barack+obama" },
+    { "url": "http://en.wikipedia.org/wiki/Wikipedia" },
+    { "url": "http://qq.com" },
+    { "url": "http://www.amazon.com/Kindle-Fire-Amazon-Tablet/dp/B0051VVOB2" },
+    { "url": "http://googleblog.blogspot.com/" },
+    { "url": "http://taobao.com" },
+    { "url": "http://www.linkedin.com/in/linustorvalds" },
+    { "url": "http://yahoo.co.jp" },
+    { "url": "http://sina.com.cn" },
+    { "url": "http://msn.com" },
+    { "url": "http://yandex.ru/yandsearch?text=barack+obama" },
+    { "url": "http://translation.babylon.com/" },
+    { "url": "http://www.bing.com/search?q=barack+obama" },
+    { "url": "http://wordpress.org/news/" },
+    { "url": "http://www.ebay.com/sch/i.html?_nkw=antiques" },
+    { "url": "http://163.com" },
+    { "url": "http://www.soso.com/q?w=barack+obama" },
+    { "url": "http://www.microsoft.com/en-us/default.aspx" },
+    { "url": "http://go.mail.ru/search?mailru=1&mg=1&q=barack+obama" },
+    { "url": "http://vk.com/id118712387" },
+    { "url": "http://staff.tumblr.com/" },
+    { "url": "http://sohu.com" },
+    { "url": "http://sfbay.craigslist.org/mis/" },
+    { "url": "http://www.ask.com/web?q=barack+obama&search=&qsrc=0&o=0&l=dir" },
+    { "url": "http://www.apple.com/ipodtouch/" },
+    { "url": "http://blog.pinterest.com/" },
+    { "url": "http://pinterest.com/backdrophome/" },
+    { "url": "http://paypal.com" },
+    { "url": "http://bbc.co.uk" },
+    { "url": "http://www.avg.com/us-en/avg-premium-security" },
+    { "url": "http://googlesystem.blogspot.com/" },
+    { "url": "http://tudou.com" },
+    { "url": "http://blog.fc2.com/en/" },
+    { "url": "http://imdb.com" },
+    { "url": "http://youku.com" },
+    { "url": "http://www.flickr.com/photos/thomashawk/" },
+    { "url": "http://www.flickr.com/photos/thomashawk/sets/72157600284219965/detail/" },
+    { "url": "http://search.yahoo.com/search?ei=UTF-8&trackingType=go_search_home&p=barack+obama&fr=hsusgo1&sa.x=0&sa.y=0" },
+    { "url": "http://www.conduit.com/" },
+    { "url": "http://ifeng.com" },
+    { "url": "http://tmall.com" },
+    { "url": "http://hao123.com" },
+    { "url": "http://aol.com" },
+    { "url": "http://zedo.com" },
+    { "url": "http://search.mywebsearch.com/mywebsearch/GGmain.jhtml?searchfor=barack+obama" },
+    { "url": "http://cnn.com" },
+    { "url": "http://portal.ebay.de/deutschland-schraubt-angebote" },
+    { "url": "http://www.adobe.com/products/photoshopfamily.html?promoid=JOLIW" },
+    { "url": "http://global.rakuten.com/us/" },
+    { "url": "http://laundry.about.com/od/kidsandlaundry/f/How-Do-I-Wash-A-Backpack.htm" },
+    { "url": "http://thepiratebay.se/search/barack%20obama/0/99/0" },
+    { "url": "http://360buy.com" },
+    { "url": "http://huffingtonpost.com" },
+    { "url": "http://alibaba.com" },
+    { "url": "http://chinaz.com" },
+    { "url": "http://www.sogou.com/web?query=barack+obama" },
+    { "url": "http://www.amazon.de/gp/product/B0051QVF7A/ref=amb_link_170625867_1/275-4711375-4099801?ie=UTF8&nav_sdd=aps&pf_rd_m=A3JWKAKR8XB7XF&pf_rd_s=center-1&pf_rd_r=1C0XDBPB12WHDM63V11R&pf_rd_t=101&pf_rd_p=320475427&pf_rd_i=301128" },
+    { "url": "http://google.pl" },
+    { "url": "http://mediafire.com" },
+    { "url": "http://espn.go.com" },
+    { "url": "http://uol.com.br" },
+    { "url": "http://www.godaddy.com/products/secure-hosting.aspx?ci=72738" },
+    { "url": "http://imgur.com/gallery/b90ZE" },
+    { "url": "http://home.alipay.com/bank/paymentKJ.htm" },
+    { "url": "http://amazon.co.jp" },
+    { "url": "http://stackoverflow.com/questions/11227809/why-is-processing-a-sorted-array-faster-than-an-unsorted-array" },
+    { "url": "http://www.google.com/doubleclick/" },
+    { "url": "http://search.4shared.com/q/CCAD/1/barack%20obama" },
+    { "url": "http://dailymotion.com" },
+    { "url": "http://globo.com" },
+    { "url": "http://instagram.com/developer/" },
+    { "url": "http://livedoor.com" },
+    { "url": "http://wordpress.org/showcase/" },
+    { "url": "http://bp.blogspot.com" },
+    { "url": "http://wigetmedia.com/advertisers" },
+    { "url": "http://www.search-results.com/web?&q=barack%20obama" },
+    { "url": "http://cnet.com" },
+    { "url": "http://nytimes.com" },
+    { "url": "http://torrentz.eu/search?f=barack+obama" },
+    { "url": "http://livejournal.com" },
+    { "url": "http://douban.com" },
+    { "url": "http://www.weather.com/weather/right-now/Mountain+View+CA+94043" },
+    { "url": "http://dailymail.co.uk" },
+    { "url": "http://www.tianya.cn/bbs/index.shtml" },
+    { "url": "http://ehow.com" },
+    { "url": "http://theproject.badoo.com/final.phtml" },
+    { "url": "http://www.bankofamerica.com/deposits/checksave/index.cfm?template=check_eBanking" },
+    { "url": "http://vimeo.com" },
+    { "url": "http://360.cn" },
+    { "url": "http://indiatimes.com" },
+    { "url": "http://deviantart.com" },
+    { "url": "http://reddit.com" },
+    { "url": "http://aweber.com" },
+    { "url": "http://warriorforum.com" },
+    { "url": "http://spiegel.de" },
+    { "url": "http://pconline.com.cn" },
+    { "url": "http://mozilla.org" },
+    { "url": "http://booking.com" },
+    { "url": "http://goo.ne.jp" },
+    { "url": "https://www.chase.com/online/Home-Lending/mortgages.htm" },
+    { "url": "http://addthis.com" },
+    { "url": "http://56.com" },
+    { "url": "http://news.blogfa.com/" },
+    { "url": "http://www.stumbleupon.com/jobs" },
+    { "url": "https://www.dropbox.com/about" },
+    { "url": "http://www.clicksor.com/publishers/adformat" },
+    { "url": "http://answers.com" },
+    { "url": "http://en.softonic.com/" },
+    { "url": "http://walmart.com" },
+    { "url": "http://pengyou.com" },
+    { "url": "http://outbrain.com" },
+    { "url": "http://comcast.net" },
+    { "url": "http://foxnews.com" },
+    { "url": "http://photobucket.com/findstuff/photography%20styles/" },
+    { "url": "http://bleach.wikia.com/?redirect=no" },
+    { "url": "http://sourceforge.net/projects/xoops/?source=frontpage&position=1" },
+    { "url": "http://onet.pl" },
+    { "url": "http://guardian.co.uk" },
+    { "url": "https://www.wellsfargo.com/jump/enterprise/doublediscount?msc=5589&mplx=10918-70119-3408-64" },
+    { "url": "http://wikimediafoundation.org/wiki/Home" },
+    { "url": "http://xunlei.com" },
+    { "url": "http://as.58.com/shuma/" },
+    { "url": "http://skype.com" },
+    { "url": "http://etsy.com" },
+    { "url": "http://bild.de" },
+    { "url": "http://search.naver.com/search.naver?where=nexearch&query=barack+obama&sm=top_hty&fbm=0&ie=utf8" },
+    { "url": "http://statcounter.com/features/?PHPSESSID=bbjcvjr681bcul4vqvgq2qgmo7" },
+    { "url": "http://iqiyi.com" },
+    { "url": "http://fbcdn.net" },
+    { "url": "http://www.myspace.com/browse/people" },
+    { "url": "http://allegro.pl/antyki-i-sztuka" },
+    { "url": "http://yesky.com" },
+    { "url": "http://justbeenpaid.com" },
+    { "url": "http://adultfriendfinder.com" },
+    { "url": "http://fiverr.com" },
+    { "url": "http://www.leboncoin.fr/annonces/offres/centre/" },
+    { "url": "http://dictionary.reference.com/" },
+    { "url": "http://realtime.rediff.com/instasearch#!barack%20obama" },
+    { "url": "http://zol.com.cn" },
+    { "url": "http://optmd.com" },
+    { "url": "http://www.filestube.com/search.html?q=barack+obama&select=All" },
+    { "url": "http://xinhuanet.com" },
+    { "url": "http://www.salesforce.com/sales-cloud/overview/" },
+    { "url": "http://www.squidoo.com/make-cards-and-gift-bags-with-antique-photos" },
+    { "url": "http://www.domaintools.com/research/" },
+    { "url": "http://download.cnet.com/windows/?tag=hdr;brandnav" },
+    { "url": "https://rapidshare.com/#!shop" },
+    { "url": "http://people.com.cn" },
+    { "url": "http://ucoz.ru" },
+    { "url": "http://free.fr" },
+    { "url": "http://nicovideo.jp" },
+    { "url": "http://www.yelp.com/search?find_desc=food&find_loc=San+Jose%2C+CA&ns=1" },
+    { "url": "http://slideshare.net" },
+    { "url": "http://archive.org/web/web.php" },
+    { "url": "http://www.cntv.cn/index.shtml" },
+    { "url": "http://english.cntv.cn/01/index.shtml" },
+    { "url": "http://abonnez-vous.orange.fr/residentiel/accueil/accueil.aspx" },
+    { "url": "http://v.it168.com/" },
+    { "url": "http://nbcolympics.com" },
+    { "url": "http://hootsuite.com" },
+    { "url": "http://www.scribd.com/doc/52210329/The-Masters-Augusta-National-s-Amen-Corner-up-close" },
+    { "url": "http://themeforest.net" },
+    { "url": "http://4399.com" },
+    { "url": "http://www.soku.com/v?keyword=barack%20obama" },
+    { "url": "http://google.se" },
+    { "url": "http://funmoods.com" },
+    { "url": "http://csdn.net" },
+    { "url": "http://telegraph.co.uk" },
+    { "url": "http://taringa.net" },
+    { "url": "http://www.tripadvisor.com/Tourism-g32701-Mendocino_California-Vacations.html" },
+    { "url": "http://pof.com" },
+    { "url": "http://wp.pl" },
+    { "url": "http://soundcloud.com/flosstradamus/tracks" },
+    { "url": "http://w3schools.com/html/default.asp" },
+    { "url": "http://ameblo.jp/staff/" },
+    { "url": "http://wsj.com" },
+    { "url": "http://web.de" },
+    { "url": "http://sweetim.com" },
+    { "url": "http://rambler.ru" },
+    { "url": "http://gmx.net" },
+    { "url": "http://www.indeed.com/jobs?q=software&l=Mountain+View%2C+CA" },
+    { "url": "http://ilivid.com" },
+    { "url": "http://www.xing.com/search/people?search%5Bq%5D=lufthansa" },
+    { "url": "http://reuters.com" },
+    { "url": "http://hostgator.com" },
+    { "url": "http://www.ikea.com/us/en/catalog/categories/departments/living_room/" },
+    { "url": "http://www.kaixin001.com/award2012/wenming/index.php" },
+    { "url": "http://ku6.com" },
+    { "url": "http://libero.it" },
+    { "url": "http://samsung.com" },
+    { "url": "http://hudong.com" },
+    { "url": "http://espncricinfo.com" },
+    { "url": "http://china.com" },
+    { "url": "http://www.ups.com/content/us/en/bussol/browse/smallbiz/new-to-ups.html?WT.svl=SolExp" },
+    { "url": "http://letv.com" },
+    { "url": "http://ero-advertising.com" },
+    { "url": "http://mashable.com" },
+    { "url": "http://iminent.com" },
+    { "url": "http://rutracker.org" },
+    { "url": "http://www.shopping.hp.com/en_US/home-office/-/products/Laptops/Laptops" },
+    { "url": "http://www.clickbank.com/buy_products.htm?dores=true&mainCategoryId=1340&sortField=POPULARITY&b1=1340" },
+    { "url": "http://b.hatena.ne.jp/" },
+    { "url": "http://www.youdao.com/search?q=barack+obama&ue=utf8&keyfrom=web.index" },
+    { "url": "http://forbes.com" },
+    { "url": "http://nbcnews.com" },
+    { "url": "http://bitauto.com" },
+    { "url": "http://php.net" },
+    { "url": "http://www.target.com/c/women/-/N-5xtd3#?lnk=nav_t_spc_1_0" },
+    { "url": "http://dianxin.cn" },
+    { "url": "http://www.aizhan.com/siteall/www.youboy.com/" },
+    { "url": "http://veiculos-home.mercadolivre.com.br/" },
+    { "url": "http://kakaku.com" },
+    { "url": "http://flipkart.com" },
+    { "url": "http://paipai.com" }
   ]
 }
diff --git a/tools/perf/page_sets/image_decoding_benchmark.json b/tools/perf/page_sets/image_decoding_benchmark.json
index 0c482b0..01ff56a 100644
--- a/tools/perf/page_sets/image_decoding_benchmark.json
+++ b/tools/perf/page_sets/image_decoding_benchmark.json
@@ -1,29 +1,12 @@
 {
   "description": "A directed benchmark of image decoding performance",
+  "post_navigate_javascript_to_execute": "runBenchmark();",
+  "wait_for_javascript_expression": "isDone",
+  "image_decoding_benchmark_limit_results_to_min_iterations": true,
   "pages": [
-    {
-      "url": "file:///../../../chrome/test/data/image_decoding/image_decoding.html?gif",
-      "post_navigate_javascript_to_execute": "runBenchmark();",
-      "wait_for_javascript_expression": "isDone",
-      "image_decoding_benchmark_limit_results_to_min_iterations": true
-    },
-    {
-      "url": "file:///../../../chrome/test/data/image_decoding/image_decoding.html?jpg",
-      "post_navigate_javascript_to_execute": "runBenchmark();",
-      "wait_for_javascript_expression": "isDone",
-      "image_decoding_benchmark_limit_results_to_min_iterations": true
-    },
-    {
-      "url": "file:///../../../chrome/test/data/image_decoding/image_decoding.html?png",
-      "post_navigate_javascript_to_execute": "runBenchmark();",
-      "wait_for_javascript_expression": "isDone",
-      "image_decoding_benchmark_limit_results_to_min_iterations": true
-    },
-    {
-      "url": "file:///../../../chrome/test/data/image_decoding/image_decoding.html?webp",
-      "post_navigate_javascript_to_execute": "runBenchmark();",
-      "wait_for_javascript_expression": "isDone",
-      "image_decoding_benchmark_limit_results_to_min_iterations": true
-    }
+    { "url": "file:///../../../chrome/test/data/image_decoding/image_decoding.html?gif" },
+    { "url": "file:///../../../chrome/test/data/image_decoding/image_decoding.html?jpg" },
+    { "url": "file:///../../../chrome/test/data/image_decoding/image_decoding.html?png" },
+    { "url": "file:///../../../chrome/test/data/image_decoding/image_decoding.html?webp" }
   ]
 }
diff --git a/tools/perf/page_sets/key_desktop_sites.json b/tools/perf/page_sets/key_desktop_sites.json
index bee018a..85b05e8 100644
--- a/tools/perf/page_sets/key_desktop_sites.json
+++ b/tools/perf/page_sets/key_desktop_sites.json
@@ -2,2444 +2,620 @@
   "description": "Sites of Interest",
   "archive_data_file": "../data/sites_of_interest.json",
   "credentials_path": "../data/credentials.json",
+  "smoothness": { "action": "scroll" },
   "pages": [
     {
       "url": "http://facebook.com",
-      "credentials": "facebook",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://youtube.com",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://twitter.com/nbc",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://bbc.co.uk",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://imdb.com",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://espn.go.com",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://cnn.com",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://bbc.co.uk/news/",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://weather.com",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://livejournal.com",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://deviantart.com",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://foxnews.com",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://nbcnews.com",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://scribd.com",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://movies.yahoo.com",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://tv.yahoo.com",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://pandora.com",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://tmz.com",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://hulu.com",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://abcnews.go.com",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://youtube.com/videos",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://ndtv.com",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://money.cnn.com",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://msn.foxsports.com",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://cbsnews.com",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://wired.com",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://cnbc.com",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://sportsillustrated.cnn.com",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://home.disney.go.com",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://urbandictionary.com",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://rottentomatoes.com",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://foodnetwork.com",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://npr.org",
-      "smoothness": { "action": "scroll" }
-    },
-    {
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+    { "url": "http://formula1.com" },
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+    { "url": "http://boingboing.net/category/featured/" },
+    { "url": "http://thenextweb.com/" },
+    { "url": "http://politicalticker.blogs.cnn.com/" },
+    { "url": "http://deadspin.com/" },
+    { "url": "http://news.yahoo.com/" },
+    { "url": "http://www.cnn.com/" },
+    { "url": "http://www.nbcnews.com/" },
+    { "url": "http://www.bbc.co.uk/news/" },
+    { "url": "http://www.reddit.com/" },
+    { "url": "http://my.yahoo.com/" },
+    { "url": "http://www.foxnews.com/" },
+    { "url": "http://www.guardiannews.com/uk-home" },
+    { "url": "http://timesofindia.indiatimes.com/" },
+    { "url": "http://online.wsj.com/home-page" },
+    { "url": "http://www.forbes.com/home_usa/" },
+    { "url": "http://www.washingtonpost.com/" },
+    { "url": "http://www.usatoday.com/" },
+    { "url": "http://drudgereport.com/" },
+    { "url": "http://abcnews.go.com/" },
+    { "url": "http://www.latimes.com/" },
+    { "url": "http://www.bloomberg.com/" },
+    { "url": "http://money.cnn.com/" },
+    { "url": "http://www.news.com.au/" },
+    { "url": "http://www.cbsnews.com/" },
+    { "url": "http://www.examiner.com/" },
+    { "url": "http://www.cnbc.com/" },
+    { "url": "http://www.alarabiya.net/default.html" },
+    { "url": "http://www.time.com/time/" },
+    { "url": "http://www.foxnews.com/politics/index.html" },
+    { "url": "http://www.smh.com.au/" },
+    { "url": "http://www.businessweek.com/" },
+    { "url": "http://www.nationalgeographic.com/" },
+    { "url": "http://www.wunderground.com/cgi-bin/findweather/getForecast?query=94035&sp=KCAMOUNT24" },
+    { "url": "http://www.accuweather.com/en/search-locations?zipcode=mountain%20view,%20ca" },
+    { "url": "http://www.weather.com/weather/right-now/Mountain+View+CA+94043" },
+    { "url": "http://weather.yahoo.com/united-states/california/mountain-view-12797130/" },
+    { "url": "http://www.yr.no/place/Norway/Oslo/Oslo/Oslo/" },
+    { "url": "http://www.metoffice.gov.uk/" },
+    { "url": "http://www.intellicast.com/Local/Weather.aspx?location=USCA0746" },
+    { "url": "http://www.shutterstock.com/cat.mhtml?searchterm=google&search_group=&lang=en&search_source=search_form" },
+    { "url": "http://www.flickr.com/search/?q=monkeys&f=hp" },
+    { "url": "http://www.flickr.com/photos/davidgutierrez/sets/72157604615916402/?page=3" },
+    { "url": "http://www.flickr.com/photos/davidgutierrez/sets/72157604615916402/show/with/4403158307/" },
+    { "url": "http://www.apple.com/iphone/" },
+    { "url": "http://www.taobao.com/index_global.php" },
+    { "url": "http://hootsuite.com/" },
+    { "url": "http://www.android.com/" },
+    { "url": "https://www.change.org/" },
+    { "url": "http://www.nytimes.com/skimmer/#/Technology" },
+    { "url": "http://www.glennbeck.com/" },
+    { "url": "http://www.pengyou.com/mobile?from=loginAndroid" },
+    { "url": "http://en.wikipedia.org/wiki/Cat" },
+    { "url": "http://en.wikipedia.org/wiki/British_Royal_Family" },
+    { "url": "http://9gag.com/gag/5202885" },
+    { "url": "http://www.wowwiki.com/World_of_Warcraft:_Mists_of_Pandaria" },
+    { "url": "http://twitter.github.com/bootstrap/" },
+    { "url": "http://reviews.cnet.com/8301-13727_7-57431192-263/disable-elastic-scrolling-in-os-x/" },
+    { "url": "http://mlb.com" },
+    { "url": "http://thenounproject.com/zh-cn/" },
+    { "url": "http://allrecipes.com/recipe/chicken-pot-pie-ix/" },
+    { "url": "http://www.gamespot.com/" },
+    { "url": "http://valleywag.com/" },
+    { "url": "http://gawker.com/5939683/based-on-a-true-story-is-a-rotten-lie-i-hope-you-never-believe" },
+    { "url": "http://www.imdb.com/title/tt0910970/" },
+    { "url": "http://www.html5rocks.com/en/" },
+    { "url": "http://athome.kimvallee.com/2010/03/why-to-splurge-on-a-high-end-dishwasher/" },
+    { "url": "http://mlb.mlb.com/mlb/gameday/index.jsp?gid=2012_08_31_sfnmlb_chnmlb_1&mode=wrap#gid=2012_08_31_sfnmlb_chnmlb_1&mode=box" },
+    { "url": "http://nytimes.com" },
+    { "url": "http://arstechnica.com" },
+    { "url": "http://pinterest.com" },
+    { "url": "http://www.theregister.co.uk/" },
+    { "url": "http://forum.xda-developers.com/" },
+    { "url": "http://maps.google.com" },
+    { "url": "https://www.google.com/search?num=10&hl=en&site=&tbm=isch&q=cats" },
+    { "url": "http://code.google.com/p/chromium/issues/list" },
+    { "url": "http://code.google.com/p/chromium/issues/detail?id=142038&q=black%20screen%20amd&colspec=ID%20Pri%20Mstone%20ReleaseBlock%20OS%20Area%20Feature%20Status%20Owner%20Summary" },
+    { "url": "http://mlb.mlb.com/index.jsp" },
+    { "url": "http://www.nfl.com/" },
+    { "url": "http://airbnb.github.com/infinity/demo-on.html" },
+    { "url": "http://habrahabr.ru/post/149892/#habracut" }
   ]
 }
diff --git a/tools/perf/page_sets/key_mobile_sites.json b/tools/perf/page_sets/key_mobile_sites.json
index 1df313d..b91f0b6 100644
--- a/tools/perf/page_sets/key_mobile_sites.json
+++ b/tools/perf/page_sets/key_mobile_sites.json
@@ -3,186 +3,119 @@
   "archive_data_file": "../data/key_mobile_sites.json",
   "credentials_path": "../data/credentials.json",
   "user_agent_type": "mobile",
+  "smoothness": { "action": "scroll" },
   "pages": [
-    {
-      "url": "http://www.androidpolice.com/2012/10/03/rumor-evidence-mounts-that-an-lg-optimus-g-nexus-is-coming-along-with-a-nexus-phone-certification-program/",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://nytimes.com/",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://iphone.capitolvolkswagen.com/index.htm#new-inventory_p_2Fsb-new_p_2Ehtm_p_3Freset_p_3DInventoryListing",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://gsp.ro",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://uk.wsj.com",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://cuteoverload.com",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://theverge.com",
-      "smoothness": { "action": "scroll" }
-    },
+    { "url": "http://www.androidpolice.com/2012/10/03/rumor-evidence-mounts-that-an-lg-optimus-g-nexus-is-coming-along-with-a-nexus-phone-certification-program/" },
+    { "url": "http://nytimes.com/" },
+    { "url": "http://iphone.capitolvolkswagen.com/index.htm#new-inventory_p_2Fsb-new_p_2Ehtm_p_3Freset_p_3DInventoryListing" },
+    { "url": "http://gsp.ro" },
+    { "url": "http://uk.wsj.com" },
+    { "url": "http://cuteoverload.com" },
+    { "url": "http://theverge.com" },
     {
       "url": "http://www.theverge.com/2012/10/28/3568746/amazon-7-inch-fire-hd-ipad-mini-ad-ballsy",
-      "wait_for_javascript_expression": "window.Chorus !== undefined && window.Chorus.Comments !== undefined && window.Chorus.Comments.Json !== undefined && (window.Chorus.Comments.loaded || window.Chorus.Comments.Json.load_comments())",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://www.cnn.com/2012/10/03/politics/michelle-obama-debate/index.html",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://en.m.wikipedia.org/wiki/Google",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://googleblog.blogspot.co.uk/",
-      "smoothness": { "action": "scroll" }
+      "wait_for_javascript_expression": "window.Chorus !== undefined && window.Chorus.Comments !== undefined && window.Chorus.Comments.Json !== undefined && (window.Chorus.Comments.loaded || window.Chorus.Comments.Json.load_comments())"
     },
+    { "url": "http://www.cnn.com/2012/10/03/politics/michelle-obama-debate/index.html" },
+    { "url": "http://en.m.wikipedia.org/wiki/Google" },
+    { "url": "http://googleblog.blogspot.co.uk/" },
     {
       "disabled": "Disabled due to crbug.com/169980",
-      "url": "http://digg.com ",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://www.hs.fi/",
-      "smoothness": { "action": "scroll" }
-    },
+      "url": "http://digg.com " },
+    { "url": "http://www.hs.fi/" },
     {
       "url": "https://www.google.com/#hl=en&q=barack+obama",
-      "why": "top google property; a google tab is often open",
-      "smoothness": { "action": "scroll" }
+      "why": "top google property; a google tab is often open"
     },
     {
       "url": "https://plus.google.com/110031535020051778989/posts",
-      "why": "social; top google property; Public profile; infinite scrolls",
-      "smoothness": { "action": "scroll", "scroll_is_infinite": true }
+      "why": "social; top google property; Public profile; infinite scrolls"
     },
     {
       "url": "http://www.youtube.com",
-      "why": "#3 (Alexa global)",
-      "smoothness": { "action": "scroll" }
+      "why": "#3 (Alexa global)"
     },
     {
       "name": "Blogger",
       "url": "http://googlewebmastercentral.blogspot.com/",
-      "why": "#11 (Alexa global), google property; some blogger layouts have infinite scroll but more interesting",
-      "smoothness": { "action": "scroll" }
+      "why": "#11 (Alexa global), google property; some blogger layouts have infinite scroll but more interesting"
     },
     {
       "name": "Wordpress",
       "url": "http://en.blog.wordpress.com/2012/09/04/freshly-pressed-editors-picks-for-august-2012/",
-      "why": "#18 (Alexa global), Picked an interesting post",
-      "smoothness": { "action": "scroll" }
+      "why": "#18 (Alexa global), Picked an interesting post"
     },
     {
       "name": "LinkedIn",
       "url": "http://www.linkedin.com/in/linustorvalds",
-      "why": "#12 (Alexa global),Public profile",
-      "smoothness": { "action": "scroll" }
+      "why": "#12 (Alexa global),Public profile"
     },
     {
       "name": "Wikipedia (1 tab)",
       "url": "http://en.wikipedia.org/wiki/Wikipedia",
-      "why": "#6 (Alexa) most visited worldwide,Picked an interesting page",
-      "smoothness": { "action": "scroll" }
+      "why": "#6 (Alexa) most visited worldwide,Picked an interesting page"
     },
     {
       "disabled": "Forbidden (Rate Limit Exceeded)",
       "name": "Twitter",
       "url": "http://twitter.com/katyperry",
-      "why": "#8 (Alexa global),Picked an interesting page",
-      "smoothness": { "action": "scroll", "scroll_is_infinite": true }
+      "why": "#8 (Alexa global),Picked an interesting page"
     },
     {
       "name": "Pinterest",
       "url": "http://pinterest.com",
-      "why": "#37 (Alexa global)",
-      "smoothness": { "action": "scroll", "scroll_is_infinite": true }
+      "why": "#37 (Alexa global)"
     },
     {
       "name": "ESPN",
       "url": "http://espn.go.com",
-      "why": "#1 sports",
-      "smoothness": { "action": "scroll" }
+      "why": "#1 sports"
     },
     {
       "url": "http://news.yahoo.com",
-      "why": "#1 news worldwide (Alexa global)",
-      "smoothness": { "action": "scroll" }
+      "why": "#1 news worldwide (Alexa global)"
     },
     {
       "url": "http://www.cnn.com",
-      "why": "#2 news worldwide",
-      "smoothness": { "action": "scroll" }
+      "why": "#2 news worldwide"
     },
     {
       "name": "Weather.com",
       "url": "http://www.weather.com/weather/right-now/Mountain+View+CA+94043",
-      "why": "#7 (Alexa news); #27 total time spent,Picked interesting page",
-      "smoothness": { "action": "scroll" }
+      "why": "#7 (Alexa news); #27 total time spent,Picked interesting page"
     },
     {
       "url": "http://www.amazon.com",
-      "why": "#1 world commerce website by visits; #3 commerce in the US by time spent",
-      "smoothness": { "action": "scroll" }
+      "why": "#1 world commerce website by visits; #3 commerce in the US by time spent"
     },
     {
       "url": "http://www.ebay.com",
-      "why": "#1 commerce website by time spent by users in US",
-      "smoothness": { "action": "scroll" }
+      "why": "#1 commerce website by time spent by users in US"
     },
     {
       "url": "http://games.yahoo.com",
-      "why": "#1 games according to Alexa (with actual games in it)",
-      "smoothness": { "action": "scroll" }
+      "why": "#1 games according to Alexa (with actual games in it)"
     },
     {
       "url": "http://booking.com",
-      "why": "#1 Alexa recreation",
-      "smoothness": { "action": "scroll" }
+      "why": "#1 Alexa recreation"
     },
     {
       "url": "http://answers.yahoo.com",
-      "why": "#1 Alexa reference",
-      "smoothness": { "action": "scroll" }
+      "why": "#1 Alexa reference"
     },
     {
       "url": "http://sports.yahoo.com/",
-      "why": "#1 Alexa sports",
-      "smoothness": { "action": "scroll" }
+      "why": "#1 Alexa sports"
     },
     {
       "url": "http://techcrunch.com",
-      "why": "top tech blog",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://br.337.com/pages/196/DDTank",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://culturalsolutions.co.uk/",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://www.frantzen-lindeberg.com/se/",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://game.deksiam.in.th/",
-      "smoothness": { "action": "scroll" }
+      "why": "top tech blog"
     },
+    { "url": "http://br.337.com/pages/196/DDTank" },
+    { "url": "http://culturalsolutions.co.uk/" },
+    { "url": "http://www.frantzen-lindeberg.com/se/" },
+    { "url": "http://game.deksiam.in.th/" },
     {
       "disabled": "Doesn't scroll",
       "url": "https://mail.google.com/mail/",
@@ -204,67 +137,26 @@
         "scrollable_element_function": "function(callback) { callback(document.getElementById('scrolltimedeventswk')); }"
       }
     },
-    {
-      "url": "http://mlb.mlb.com/index.jsp",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://nofolo.com/",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://planet.mozilla.org/",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://www.pravda.ru/",
-      "smoothness": { "action": "scroll" }
-    },
+    { "url": "http://mlb.mlb.com/index.jsp" },
+    { "url": "http://nofolo.com/" },
+    { "url": "http://planet.mozilla.org/" },
+    { "url": "http://www.pravda.ru/" },
     {
       "disabled": "Crashes; crbug.com/223148",
-      "url": "http://www.sahadan.com/default.aspx",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://www.sfgate.com/",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://slashdot.org/",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://www.transformice.com/",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://worldjournal.com/",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://www.wowwiki.com/World_of_Warcraft:_Mists_of_Pandaria",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://online.wsj.com/home-page",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://www.deviantart.com/",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://www.baidu.com/s?wd=barack+obama&rsv_bp=0&rsv_spt=3&rsv_sug3=9&rsv_sug=0&rsv_sug4=3824&rsv_sug1=3&inputT=4920",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "http://www.sueddeutsche.de",
-      "smoothness": { "action": "scroll" }
-    },
+      "url": "http://www.sahadan.com/default.aspx"
+    },
+    { "url": "http://www.sfgate.com/" },
+    { "url": "http://slashdot.org/" },
+    { "url": "http://www.transformice.com/" },
+    { "url": "http://worldjournal.com/" },
+    { "url": "http://www.wowwiki.com/World_of_Warcraft:_Mists_of_Pandaria" },
+    { "url": "http://online.wsj.com/home-page" },
+    { "url": "http://www.deviantart.com/" },
+    { "url": "http://www.baidu.com/s?wd=barack+obama&rsv_bp=0&rsv_spt=3&rsv_sug3=9&rsv_sug=0&rsv_sug4=3824&rsv_sug1=3&inputT=4920" },
+    { "url": "http://www.sueddeutsche.de" },
     {
       "url": "http://www.boingboing.net",
-      "why": "Problematic use of fixed position elements",
-      "smoothness": { "action": "scroll" }
+      "why": "Problematic use of fixed position elements"
     }
   ]
 }
diff --git a/tools/perf/page_sets/top_25.json b/tools/perf/page_sets/top_25.json
index 565a119..2a3d8db 100644
--- a/tools/perf/page_sets/top_25.json
+++ b/tools/perf/page_sets/top_25.json
@@ -3,11 +3,11 @@
   "archive_data_file": "../data/top_25.json",
   "credentials_path": "../data/credentials.json",
   "user_agent_type": "desktop",
+  "smoothness": { "action": "scroll" },
   "pages": [
     {
       "url": "https://www.google.com/#hl=en&q=barack+obama",
       "why": "top google property; a google tab is often open",
-      "smoothness": { "action": "scroll" },
       "wait_for_element_with_text": "Next",
       "stress_memory": [
         { "action": "scroll" },
@@ -209,15 +209,13 @@
     {
       "url": "http://www.youtube.com",
       "why": "#3 (Alexa global)",
-      "credentials": "google",
-      "smoothness": { "action": "scroll" }
+      "credentials": "google"
     },
     {
       "name": "Blogger",
       "url": "http://googlewebmastercentral.blogspot.com/",
       "why": "#11 (Alexa global), google property; some blogger layouts have infinite scroll but more interesting",
       "wait_for_element_with_text": "accessibility",
-      "smoothness": { "action": "scroll" },
       "stress_memory": [
         {
           "action": "click_element",
@@ -253,7 +251,6 @@
       "url": "http://en.blog.wordpress.com/2012/09/04/freshly-pressed-editors-picks-for-august-2012/",
       "why": "#18 (Alexa global), Picked an interesting post",
       "wait_for_element_with_selector": "a[href=\"http://en.blog.wordpress.com/2012/08/30/new-themes-able-and-sight/\"]",
-      "smoothness": { "action": "scroll" },
       "stress_memory": [
         { "action": "scroll" },
         {
@@ -331,14 +328,12 @@
     {
       "name": "LinkedIn",
       "url": "http://www.linkedin.com/in/linustorvalds",
-      "why": "#12 (Alexa global),Public profile",
-      "smoothness": { "action": "scroll" }
+      "why": "#12 (Alexa global),Public profile"
     },
     {
       "name": "Wikipedia (1 tab)",
       "url": "http://en.wikipedia.org/wiki/Wikipedia",
-      "why": "#6 (Alexa) most visited worldwide,Picked an interesting page",
-      "smoothness": { "action": "scroll" }
+      "why": "#6 (Alexa) most visited worldwide,Picked an interesting page"
     },
     {
       "name": "Twitter",
@@ -361,59 +356,48 @@
     {
       "name": "ESPN",
       "url": "http://espn.go.com",
-      "why": "#1 sports",
-      "smoothness": { "action": "scroll" }
+      "why": "#1 sports"
     },
     {
       "url": "http://news.yahoo.com",
-      "why": "#1 news worldwide (Alexa global)",
-      "smoothness": { "action": "scroll" }
+      "why": "#1 news worldwide (Alexa global)"
     },
     {
       "url": "http://www.cnn.com",
-      "why": "#2 news worldwide",
-      "smoothness": { "action": "scroll" }
+      "why": "#2 news worldwide"
     },
     {
       "name": "Weather.com",
       "url": "http://www.weather.com/weather/right-now/Mountain+View+CA+94043",
-      "why": "#7 (Alexa news); #27 total time spent,Picked interesting page",
-      "smoothness": { "action": "scroll" }
+      "why": "#7 (Alexa news); #27 total time spent,Picked interesting page"
     },
     {
       "url": "http://www.amazon.com",
-      "why": "#1 world commerce website by visits; #3 commerce in the US by time spent",
-      "smoothness": { "action": "scroll" }
+      "why": "#1 world commerce website by visits; #3 commerce in the US by time spent"
     },
     {
       "url": "http://www.ebay.com",
-      "why": "#1 commerce website by time spent by users in US",
-      "smoothness": { "action": "scroll" }
+      "why": "#1 commerce website by time spent by users in US"
     },
     {
       "url": "http://games.yahoo.com",
-      "why": "#1 games according to Alexa (with actual games in it)",
-      "smoothness": { "action": "scroll" }
+      "why": "#1 games according to Alexa (with actual games in it)"
     },
     {
       "url": "http://booking.com",
-      "why": "#1 Alexa recreation",
-      "smoothness": { "action": "scroll" }
+      "why": "#1 Alexa recreation"
     },
     {
       "url": "http://answers.yahoo.com",
-      "why": "#1 Alexa reference",
-      "smoothness": { "action": "scroll" }
+      "why": "#1 Alexa reference"
     },
     {
       "url": "http://sports.yahoo.com/",
-      "why": "#1 Alexa sports",
-      "smoothness": { "action": "scroll" }
+      "why": "#1 Alexa sports"
     },
     {
       "url": "http://techcrunch.com",
-      "why": "top tech blog",
-      "smoothness": { "action": "scroll" }
+      "why": "top tech blog"
     }
   ]
 }
diff --git a/tools/perf/page_sets/tough_animation_cases.json b/tools/perf/page_sets/tough_animation_cases.json
index 2125441..1e26bcf 100644
--- a/tools/perf/page_sets/tough_animation_cases.json
+++ b/tools/perf/page_sets/tough_animation_cases.json
@@ -1,25 +1,22 @@
 {
   "description": "A collection of animation performance tests",
+  "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 },
   "pages": [
     {
       "url": "file:///tough_animation_cases/keyframed_animations.html",
-      "why": "Tests various keyframed animations.",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
+      "why": "Tests various keyframed animations."
     },
     {
       "url": "file:///tough_animation_cases/transform_transitions.html",
-      "why": "Tests various transitions.",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
+      "why": "Tests various transitions."
     },
     {
       "url": "http://ie.microsoft.com/testdrive/performance/robohornetpro/",
-      "why": "Login page is slow because of ineffecient transform operations",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
+      "why": "Login page is slow because of ineffecient transform operations"
     },
     {
       "url": "file:///tough_animation_cases/transform_transition_js_block.html",
-      "why": "JS execution blocks CSS transition unless initial transform is set",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
+      "why": "JS execution blocks CSS transition unless initial transform is set"
     }
   ]
 }
diff --git a/tools/perf/page_sets/tough_canvas_cases.json b/tools/perf/page_sets/tough_canvas_cases.json
index a549b48..c3e11f5 100644
--- a/tools/perf/page_sets/tough_canvas_cases.json
+++ b/tools/perf/page_sets/tough_canvas_cases.json
@@ -1,162 +1,46 @@
 {
   "description": "Self-driven Canvas2D animation examples",
   "archive_data_file": "../data/tough_canvas_cases.json",
+  "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 },
   "pages": [
-    {
-      "url":"http://mudcu.be/labs/JS1k/BreathingGalaxies.html",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    },
-    {
-      "url":"http://runway.countlessprojects.com/prototype/performance_test.html",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    },
-    {
-      "url":"http://geoapis.appspot.com/agdnZW9hcGlzchMLEgtFeGFtcGxlQ29kZRjh1wIM",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    },
-    {
-      "url":"http://ie.microsoft.com/testdrive/Graphics/HowStuffWorksGears/Default.html",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    },
-    {
-      "url":"http://ie.microsoft.com/testdrive/Performance/FishIETank/Default.html",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    },
-    {
-      "url":"http://ie.microsoft.com/testdrive/Performance/SpeedReading/Default.html",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    },
-    {
-      "url":"http://www.storiesinflight.com/jsfft/visualizer_webaudio/",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    },
-    {
-      "url":"http://acko.net/dumpx/996b.html",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    },
-    {
-      "url":"http://funkaster.github.com/ChesterGL/test/test_block_frames.html",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    },
-    {
-      "url":"http://www.kevs3d.co.uk/dev/canvask3d/k3d_test.html",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    },
-    {
-      "url":"http://www.grantgalitz.org/sound_test/",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    },
-    {
-      "url":"http://www.megidish.net/awjs/",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    },
-    {
-      "url":"http://ie.microsoft.com/testdrive/Performance/Fireflies/Default.html",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    },
-    {
-      "url":"http://themaninblue.com/experiment/AnimationBenchmark/canvas/",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    },
-    {
-      "url":"http://mix10k.visitmix.com/Entry/Details/169",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    },
-    {
-      "url":"http://www.craftymind.com/factory/guimark2/HTML5ChartingTest.html",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    },
-    {
-      "url":"http://labs.jam3.ca/wp-content/uploads/2010/02/canvasVoxels.html",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    },
-    {
-      "url":"http://www.chiptune.com/starfield/starfield.html",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    },
-    {
-      "url":"http://deanm.github.com/pre3d/monster.html",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    },
-    {
-      "url":"http://jarrodoverson.com/static/demos/particleSystem/",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    },
-    {
-      "url":"http://www.effectgames.com/demos/canvascycle/",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    },
-    {
-      "url":"http://www.thewildernessdowntown.com/",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    },
-    {
-      "url":"http://spielzeugz.de/html5/liquid-particles.html",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    },
-    {
-      "url":"http://clublime.com/lab/html5/sphere/",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    },
-    {
-      "url":"http://9elements.com/io/projects/html5/canvas/",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    },
-    {
-      "url":"http://hakim.se/experiments/html5/magnetic/02/",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    },
-    {
-      "url":"http://ie.microsoft.com/testdrive/Performance/LetItSnow/",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    },
-    {
-      "url":"http://ie.microsoft.com/testdrive/Graphics/WorkerFountains/Default.html",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    },
-    {
-      "url":"http://ie.microsoft.com/testdrive/Graphics/VideoKaleidoscope/Default.html",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    },
-    {
-      "url":"http://ie.microsoft.com/testdrive/Graphics/TweetMap/Default.html",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    },
-    {
-      "url":"http://ie.microsoft.com/testdrive/Graphics/IEBeatz/Default.xhtml",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    },
-    {
-      "url":"http://ie.microsoft.com/testdrive/Graphics/VideoCity/Default.html",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    },
-    {
-      "url":"http://ie.microsoft.com/testdrive/Performance/AsteroidBelt/Default.html",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    },
-    {
-      "url":"http://www.smashcat.org/av/canvas_test/",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    },
-    {
-      "url": "file:///tough_canvas_cases/compositing_huge_div/index.html",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    },
-    {
-      "url": "file:///tough_canvas_cases/canvas2d_balls_common/bouncing_balls.html?ball=canvas_sprite&back=canvas",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    },
-    {
-      "url": "file:///tough_canvas_cases/canvas2d_balls_common/bouncing_balls.html?ball=image_with_shadow&back=image",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    },
-    {
-      "url": "file:///tough_canvas_cases/canvas2d_balls_common/bouncing_balls.html?ball=filled_path&back=gradient",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    },
-    {
-      "url": "file:///tough_canvas_cases/canvas2d_balls_common/bouncing_balls.html?ball=text&back=white&ball_count=15",
-      "smoothness": { "action": "wait", "condition": "duration", "seconds": 5 }
-    }
+    { "url":"http://mudcu.be/labs/JS1k/BreathingGalaxies.html" },
+    { "url":"http://runway.countlessprojects.com/prototype/performance_test.html" },
+    { "url":"http://geoapis.appspot.com/agdnZW9hcGlzchMLEgtFeGFtcGxlQ29kZRjh1wIM" },
+    { "url":"http://ie.microsoft.com/testdrive/Graphics/HowStuffWorksGears/Default.html" },
+    { "url":"http://ie.microsoft.com/testdrive/Performance/FishIETank/Default.html" },
+    { "url":"http://ie.microsoft.com/testdrive/Performance/SpeedReading/Default.html" },
+    { "url":"http://www.storiesinflight.com/jsfft/visualizer_webaudio/" },
+    { "url":"http://acko.net/dumpx/996b.html" },
+    { "url":"http://funkaster.github.com/ChesterGL/test/test_block_frames.html" },
+    { "url":"http://www.kevs3d.co.uk/dev/canvask3d/k3d_test.html" },
+    { "url":"http://www.grantgalitz.org/sound_test/" },
+    { "url":"http://www.megidish.net/awjs/" },
+    { "url":"http://ie.microsoft.com/testdrive/Performance/Fireflies/Default.html" },
+    { "url":"http://themaninblue.com/experiment/AnimationBenchmark/canvas/" },
+    { "url":"http://mix10k.visitmix.com/Entry/Details/169" },
+    { "url":"http://www.craftymind.com/factory/guimark2/HTML5ChartingTest.html" },
+    { "url":"http://labs.jam3.ca/wp-content/uploads/2010/02/canvasVoxels.html" },
+    { "url":"http://www.chiptune.com/starfield/starfield.html" },
+    { "url":"http://deanm.github.com/pre3d/monster.html" },
+    { "url":"http://jarrodoverson.com/static/demos/particleSystem/" },
+    { "url":"http://www.effectgames.com/demos/canvascycle/" },
+    { "url":"http://www.thewildernessdowntown.com/" },
+    { "url":"http://spielzeugz.de/html5/liquid-particles.html" },
+    { "url":"http://clublime.com/lab/html5/sphere/" },
+    { "url":"http://9elements.com/io/projects/html5/canvas/" },
+    { "url":"http://hakim.se/experiments/html5/magnetic/02/" },
+    { "url":"http://ie.microsoft.com/testdrive/Performance/LetItSnow/" },
+    { "url":"http://ie.microsoft.com/testdrive/Graphics/WorkerFountains/Default.html" },
+    { "url":"http://ie.microsoft.com/testdrive/Graphics/VideoKaleidoscope/Default.html" },
+    { "url":"http://ie.microsoft.com/testdrive/Graphics/TweetMap/Default.html" },
+    { "url":"http://ie.microsoft.com/testdrive/Graphics/IEBeatz/Default.xhtml" },
+    { "url":"http://ie.microsoft.com/testdrive/Graphics/VideoCity/Default.html" },
+    { "url":"http://ie.microsoft.com/testdrive/Performance/AsteroidBelt/Default.html" },
+    { "url":"http://www.smashcat.org/av/canvas_test/" },
+    { "url": "file:///tough_canvas_cases/compositing_huge_div/index.html" },
+    { "url": "file:///tough_canvas_cases/canvas2d_balls_common/bouncing_balls.html?ball=canvas_sprite&back=canvas" },
+    { "url": "file:///tough_canvas_cases/canvas2d_balls_common/bouncing_balls.html?ball=image_with_shadow&back=image" },
+    { "url": "file:///tough_canvas_cases/canvas2d_balls_common/bouncing_balls.html?ball=filled_path&back=gradient" },
+    { "url": "file:///tough_canvas_cases/canvas2d_balls_common/bouncing_balls.html?ball=text&back=white&ball_count=15" }
   ]
 }
diff --git a/tools/perf/page_sets/tough_scrolling_cases.json b/tools/perf/page_sets/tough_scrolling_cases.json
index 42f7e8a..7330581 100644
--- a/tools/perf/page_sets/tough_scrolling_cases.json
+++ b/tools/perf/page_sets/tough_scrolling_cases.json
@@ -1,41 +1,15 @@
 {
   "description": "A collection of difficult scrolling tests",
+  "smoothness": { "action": "scroll" },
   "pages": [
-    {
-      "url": "file:///tough_scrolling_cases/background_fixed.html",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "file:///tough_scrolling_cases/cust_scrollbar.html",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "file:///tough_scrolling_cases/div_scrolls.html",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "file:///tough_scrolling_cases/fixed_nonstacking.html",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "file:///tough_scrolling_cases/fixed_stacking.html",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "file:///tough_scrolling_cases/iframe_scrolls.html",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "file:///tough_scrolling_cases/simple.html",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "file:///tough_scrolling_cases/wheel_body_prevdefault.html",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "file:///tough_scrolling_cases/wheel_div_prevdefault.html",
-      "smoothness": { "action": "scroll" }
-    }
+    { "url": "file:///tough_scrolling_cases/background_fixed.html" },
+    { "url": "file:///tough_scrolling_cases/cust_scrollbar.html" },
+    { "url": "file:///tough_scrolling_cases/div_scrolls.html" },
+    { "url": "file:///tough_scrolling_cases/fixed_nonstacking.html" },
+    { "url": "file:///tough_scrolling_cases/fixed_stacking.html" },
+    { "url": "file:///tough_scrolling_cases/iframe_scrolls.html" },
+    { "url": "file:///tough_scrolling_cases/simple.html" },
+    { "url": "file:///tough_scrolling_cases/wheel_body_prevdefault.html" },
+    { "url": "file:///tough_scrolling_cases/wheel_div_prevdefault.html" }
   ]
 }
diff --git a/tools/perf/page_sets/tough_texture_upload_cases.json b/tools/perf/page_sets/tough_texture_upload_cases.json
index c975313..8b14979 100644
--- a/tools/perf/page_sets/tough_texture_upload_cases.json
+++ b/tools/perf/page_sets/tough_texture_upload_cases.json
@@ -1,21 +1,10 @@
 {
   "description": "A collection of texture upload performance tests",
+  "smoothness": { "action": "scroll" },
   "pages": [
-    {
-      "url": "file:///tough_texture_upload_cases/background_color_animation.html",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "file:///tough_texture_upload_cases/background_color_animation_and_transform_animation.html",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "file:///tough_texture_upload_cases/background_color_animation_with_gradient.html",
-      "smoothness": { "action": "scroll" }
-    },
-    {
-      "url": "file:///tough_texture_upload_cases/background_color_animation_with_gradient_and_transform_animation.html",
-      "smoothness": { "action": "scroll" }
-    }
+    { "url": "file:///tough_texture_upload_cases/background_color_animation.html" },
+    { "url": "file:///tough_texture_upload_cases/background_color_animation_and_transform_animation.html" },
+    { "url": "file:///tough_texture_upload_cases/background_color_animation_with_gradient.html" },
+    { "url": "file:///tough_texture_upload_cases/background_color_animation_with_gradient_and_transform_animation.html" }
   ]
 }
diff --git a/tools/telemetry/telemetry/page/page.py b/tools/telemetry/telemetry/page/page.py
index 50f88cb..7d61c61 100644
--- a/tools/telemetry/telemetry/page/page.py
+++ b/tools/telemetry/telemetry/page/page.py
@@ -23,10 +23,16 @@ class Page(object):
     self.credentials = None
     self.disabled = False
     self.wait_time_after_navigate = 2
+    self._attributes = attributes
 
-    if attributes:
-      for k, v in attributes.iteritems():
-        setattr(self, k, v)
+  def __getattr__(self, name):
+    if name in self._attributes:
+      return self._attributes[name]
+
+    if self.page_set and hasattr(self.page_set, name):
+      return getattr(self._page_set, name)
+
+    raise AttributeError()
 
   # NOTE: This assumes the page_set file uses 'file:///' instead of 'file://',
   # otherwise the '/' will be missing between page_set.base_dir and