Re-enable failing extension CSS injection browser_tests.

Change the code in ExtensionApiTest.ContentScriptCSSLocalization to no
longer use window.getMatchedCSSRules.  After WebKit r135082,
getMatchedCSSRules no longer matches style rules added by insertCSS.

Re-enable ExecuteScriptApiTest.ExecuteScriptBasic and
ExecuteScriptApiTest.ExecuteScriptInFrame. They were hitting an ASSERT
in WebKit which got fixed in r135316.

BUG=162061


Review URL: https://chromiumcodereview.appspot.com/11308143

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@169517 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/browser/extensions/execute_script_apitest.cc b/chrome/browser/extensions/execute_script_apitest.cc
index d68a27fa..c441644 100644
--- a/chrome/browser/extensions/execute_script_apitest.cc
+++ b/chrome/browser/extensions/execute_script_apitest.cc
@@ -15,19 +15,15 @@
   }
 };
 
-// Disable it until the regression caused by the webkit patch r135082 is fixed.
-// (See https://bugs.webkit.org/show_bug.cgi?id=102110 for details)
 // If failing, mark disabled and update http://crbug.com/92105.
-IN_PROC_BROWSER_TEST_F(ExecuteScriptApiTest, DISABLED_ExecuteScriptBasic) {
+IN_PROC_BROWSER_TEST_F(ExecuteScriptApiTest, ExecuteScriptBasic) {
   SetupDelayedHostResolver();
   ASSERT_TRUE(StartTestServer());
   ASSERT_TRUE(RunExtensionTest("executescript/basic")) << message_;
 }
 
-// Disable it until the regression caused by the webkit patch r135082 is fixed.
-// (See https://bugs.webkit.org/show_bug.cgi?id=102110 for details)
 // If failing, mark disabled and update http://crbug.com/92105.
-IN_PROC_BROWSER_TEST_F(ExecuteScriptApiTest, DISABLED_ExecuteScriptInFrame) {
+IN_PROC_BROWSER_TEST_F(ExecuteScriptApiTest, ExecuteScriptInFrame) {
   SetupDelayedHostResolver();
   ASSERT_TRUE(StartTestServer());
   ASSERT_TRUE(RunExtensionTest("executescript/in_frame")) << message_;