Merge 142913

Merge 142913
> [chromium] Fix scaling in WebViewImpl::handleGestureEvent, second try
> https://bugs.webkit.org/show_bug.cgi?id=109671
> 
> Reviewed by James Robinson.
> 
> My patch 142571 broke a bunch of things in handleGestureEvent that
> assumed the event came in scaled, most notably tap highlight and
> double-tap zoom. Switch those to PlatformGestureEvent.
> 
> 142808 was an earlier version of this patch that was reverted
> due to fling events asserting they can't be converted to
> PlatformGestureEvent. This version moves fling earlier in the
> function to avoid that.
> 
> * src/WebViewImpl.cpp:
> (WebKit::WebViewImpl::handleGestureEvent):
> (WebKit::WebViewImpl::bestTapNode):
> (WebKit::WebViewImpl::enableTapHighlight):
> * src/WebViewImpl.h:
> (WebViewImpl):
> * tests/LinkHighlightTest.cpp:
> (WebCore::TEST):
> 

TBR=aelias@chromium.org
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=143775

[aelias_OOO_until_Jul13, 2013-02-22 20:31:00]

Committed patchset #1 manually as r143775.