Revert 195187 "Revert 195143 "Prevent chrome.app JSON schema fro..."

Last revert failed. Who knows why.

> Revert 195143 "Prevent chrome.app JSON schema from loading on ev..."
> 
> Small perf regression.
> 
> > Prevent chrome.app JSON schema from loading on every page
> > 
> > The app API along with app.window and app.runtime have been converted to use
> > the feature system. Bindings are not added to the chrome object for unavailable
> > APIs that are children of available APIs. For example, if chrome.app is
> > available, we will not add lazy bindings to chrome for app.window and
> > app.runtime. This eliminates the need to load the app schema, because we no
> > longer need to get chrome.app to add the app.runtime and app.window bindings.
> > 
> > BUG=55316
> > 
> > Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=194837
> > 
> > Review URL: https://chromiumcodereview.appspot.com/13604005
> 
> TBR=cduvall@chromium.org
> 
> Review URL: https://codereview.chromium.org/14241030

TBR=kalman@chromium.org

Review URL: https://codereview.chromium.org/14328045

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@195199 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 36 insertions, 11 deletions

diff --git a/chrome/common/extensions/api/_api_features.json b/chrome/common/extensions/api/_api_features.json
index 1ed1017..e8d9acd 100644
--- a/chrome/common/extensions/api/_api_features.json
+++ b/chrome/common/extensions/api/_api_features.json
@@ -3,6 +3,26 @@
 // found in the LICENSE file.
 
 {
+  "app": {
+    "channel": "stable",
+    "extension_types": ["hosted_app", "extension"],
+    "contexts": [
+      "blessed_extension", "unblessed_extension", "content_script", "web_page"
+    ],
+    "matches": [
+      "http://*/*", "https://*/*", "chrome-extension://*/*", "file://*/*"
+    ]
+  },
+  "app.runtime": {
+    "channel": "stable",
+    "contexts": ["blessed_extension"],
+    "dependencies": ["permission:app.runtime"]
+  },
+  "app.window": {
+    "channel": "stable",
+    "contexts": ["blessed_extension"],
+    "dependencies": ["permission:app.window"]
+  },
   "app.currentWindowInternal": {
     "internal": true,
     "channel": "stable",
@@ -21,7 +41,9 @@
   "events": {
     "internal": true,
     "channel": "stable",
-    "contexts": ["blessed_extension", "unblessed_extension", "content_script", "web_page"],
+    "contexts": [
+      "blessed_extension", "unblessed_extension", "content_script", "web_page"
+    ],
     "matches": ["<all_urls>"]
   },
   "fileBrowserHandlerInternal": {
@@ -40,6 +62,6 @@
     "extension_types": ["hosted_app"],
     "contexts": ["blessed_extension", "web_page"],
     // Any webpage can use the webstore API.
-    "matches": [ "http://*/*", "https://*/*" ]
+    "matches": ["http://*/*", "https://*/*"]
   }
 }
diff --git a/chrome/common/extensions/api/app.json b/chrome/common/extensions/api/app.json
index 0faef3c..7735f63 100644
--- a/chrome/common/extensions/api/app.json
+++ b/chrome/common/extensions/api/app.json
@@ -6,8 +6,6 @@
   {
     "namespace": "app",
     "nodoc": true,
-    "unprivileged": true,
-    "matches": [ "<all_urls>" ],
     "types": [
       {
         "id": "Details",
diff --git a/chrome/common/extensions/api/extension_api_unittest.cc b/chrome/common/extensions/api/extension_api_unittest.cc
index f980b57..f32d451 100644
--- a/chrome/common/extensions/api/extension_api_unittest.cc
+++ b/chrome/common/extensions/api/extension_api_unittest.cc
@@ -172,10 +172,14 @@ TEST(ExtensionAPI, APIFeatures) {
     { "test2.foo", true, Feature::CONTENT_SCRIPT_CONTEXT, GURL() },
     { "test3", false, Feature::WEB_PAGE_CONTEXT, GURL("http://google.com") },
     { "test3.foo", true, Feature::WEB_PAGE_CONTEXT, GURL("http://google.com") },
-    { "test3.foo", true, Feature::BLESSED_EXTENSION_CONTEXT, GURL() },
-    { "test4", true, Feature::BLESSED_EXTENSION_CONTEXT, GURL() },
-    { "test4.foo", false, Feature::BLESSED_EXTENSION_CONTEXT, GURL() },
-    { "test4.foo", false, Feature::UNBLESSED_EXTENSION_CONTEXT, GURL() },
+    { "test3.foo", true, Feature::BLESSED_EXTENSION_CONTEXT,
+        GURL("http://bad.com") },
+    { "test4", true, Feature::BLESSED_EXTENSION_CONTEXT,
+        GURL("http://bad.com") },
+    { "test4.foo", false, Feature::BLESSED_EXTENSION_CONTEXT,
+        GURL("http://bad.com") },
+    { "test4.foo", false, Feature::UNBLESSED_EXTENSION_CONTEXT,
+        GURL("http://bad.com") },
     { "test4.foo.foo", true, Feature::CONTENT_SCRIPT_CONTEXT, GURL() },
     { "test5", true, Feature::WEB_PAGE_CONTEXT, GURL("http://foo.com") },
     { "test5", false, Feature::WEB_PAGE_CONTEXT, GURL("http://bar.com") },
@@ -380,11 +384,12 @@ TEST_F(ExtensionAPITest, URLMatching) {
   EXPECT_TRUE(MatchesURL(api.get(), "app", "https://blah.net"));
   EXPECT_TRUE(MatchesURL(api.get(), "app", "file://somefile.html"));
 
-  // But not internal URLs (for chrome-extension:// the app API is injected by
-  // GetSchemasForExtension).
+  // But not internal URLs.
   EXPECT_FALSE(MatchesURL(api.get(), "app", "about:flags"));
   EXPECT_FALSE(MatchesURL(api.get(), "app", "chrome://flags"));
-  EXPECT_FALSE(MatchesURL(api.get(), "app",
+
+  // "app" should be available to chrome-extension URLs.
+  EXPECT_TRUE(MatchesURL(api.get(), "app",
                           "chrome-extension://fakeextension"));
 
   // "storage" API (for example) isn't available to any URLs.