This factors out a new Point class and a new
createViewPointFromContentCoordinates() method. This will allow Point
and the conversion method to be re-used with mouse events.
Change-Id: I2d689d0ffa0ad7ba01d0e90f78c812604ab96234
Since the UI uses multi-touch for zooming, the event is passed to webkit
only when the webpage doesn't allow zooming.
1. Updated the data structure TouchEventData in WebViewCore.java
to take multiple points and used it everywhere.
2. Added a passMultiTouchToWebkit() function to do what its name means.
3. Added the multi-point touch support to dumprendertree.
Change-Id: Iafc1aa7b21a587ad26efd2f124b9a66316297ab8
