Revert 55072 - Revert 55063 - WebKit roll: 64705:64742....

Revert 55072 - Revert 55063 - WebKit roll: 64705:64742.
TBR=jianli

Reverting this roll didn't seem to affect the test failures.  So am reverting the revert.

Mac 10.6 Bot were failing after this change in unit_tests and interactive_ui_tests.  Failures seen:

Failing tests:
BrowserFocusTest.ClickingMovesFocus
BrowserFocusTest.TabsRememberFocus
BrowserFocusTest.FAILS_TabsRememberFocusFindInPage
BrowserFocusTest.BackgroundBrowserDontStealFocus
BrowserFocusTest.FAILS_FocusTraversal
BrowserFocusTest.FAILS_FocusTraversalOnInterstitial
BrowserFocusTest.FindFocusTest
BrowserKeyEventsTest.CommandKeyEvents
BrowserKeyEventsTest.FLAKY_ReservedAccelerators
MouseLeaveTest.FAILS_TestOnMouseOut

Note: Google Test filter = BrowserFocusTest.ClickingMovesFocus
[==========] Running 1 test from 1 test case.
[----------] Global test environment set-up.
[----------] 1 test from BrowserFocusTest
[ RUN      ] BrowserFocusTest.ClickingMovesFocus
...
/b/slave/chromium-dbg-mac-builder/build/src/chrome/../chrome/browser/browser_focus_uitest.cc:182: Failure
Value of: IsViewFocused(VIEW_ID_TAB_CONTAINER_FOCUS_VIEW)
  Actual: false
Expected: true


and

[----------] 2 tests from BrowserWindowFullScreenControllerTest
[ RUN      ] BrowserWindowFullScreenControllerTest.TestFullscreen
[       OK ] BrowserWindowFullScreenControllerTest.TestFullscreen (375 ms)
[ RUN      ] BrowserWindowFullScreenControllerTest.TestActivate
/b/slave/chromium-dbg-mac-builder/build/src/chrome/browser/cocoa/browser_window_controller_unittest.mm:600: Failure
Value of: [controller_ createFullscreenWindow]
  Actual: 0xa9a4890
Expected: frontmostWindow
Which is: 0x1e256e60
[  FAILED  ] BrowserWindowFullScreenControllerTest.TestActivate (63 ms)
[----------] 2 tests from BrowserWindowFullScreenControllerTest (438 ms total)




Review URL: http://codereview.chromium.org/3072024

TBR=pfeldman@chromium.org
Review URL: http://codereview.chromium.org/3051035

TBR=dhollowa@chromium.org

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=55085