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| author | tburkard@chromium.org <tburkard@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2012-05-15 00:56:47 +0000 |
|---|---|---|
| committer | tburkard@chromium.org <tburkard@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2012-05-15 00:56:47 +0000 |
| commit | 9831b611335c19ee12ccc0ae55a4d6c728f292e6 (patch) | |
| tree | f075d7d406f26d19ca3403f7e0898f23aef92ba0 /chrome/browser/prerender/prerender_histograms.h | |
| parent | a1639c1e430ebbfb6b6da01a736bfae61352d6df (diff) | |
| download | chromium_src-9831b611335c19ee12ccc0ae55a4d6c728f292e6.zip chromium_src-9831b611335c19ee12ccc0ae55a4d6c728f292e6.tar.gz chromium_src-9831b611335c19ee12ccc0ae55a4d6c728f292e6.tar.bz2 | |
Compute the percentage of pixels of a webpage that is
already rendered at the time a prerender is swapped in,
compared to the state of the page at the OnLoad event.
This is intended for Canary/Dev only, and will be removed
again in a few weeks.
R=dominich
Review URL: https://chromiumcodereview.appspot.com/10378109
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@137037 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'chrome/browser/prerender/prerender_histograms.h')
| -rw-r--r-- | chrome/browser/prerender/prerender_histograms.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/chrome/browser/prerender/prerender_histograms.h b/chrome/browser/prerender/prerender_histograms.h index d0d7f5e..85dea4f 100644 --- a/chrome/browser/prerender/prerender_histograms.h +++ b/chrome/browser/prerender/prerender_histograms.h @@ -75,6 +75,10 @@ class PrerenderHistograms { // Record the time since a page was recently visited. void RecordTimeSinceLastRecentVisit(base::TimeDelta time) const; + // Record a percentage of pixels of the final page already in place at + // swap-in. + void RecordFractionPixelsFinalAtSwapin(double fraction) const; + private: base::TimeTicks GetCurrentTimeTicks() const; |