Merge 252257 "events: Fix event-targeting for transformed windows."

Merge 252257 "events: Fix event-targeting for transformed windows."

> events: Fix event-targeting for transformed windows.
> 
> Applying the transforms on a Window's bounds does not give the correct transformed
> bounds of the window in its parent's coordinate system. For example, a Window with
> size 300x200 at position 20,10 and scaled at 50% has bounds (20, 10, 150, 100), and
> not (10, 5, 150, 100). So remove this transform from the window-targeting code, and
> instead convert the event's location to be in the child Window's coordinate system
> when doing hit-testing.
> 
> This fixes selecting windows when in overview mode.
> 
> BUG=339834
> R=sky@chromium.org
> 
> Review URL: https://codereview.chromium.org/167323004

TBR=sadrul@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=253297

[sadrul, 2014-02-26 00:03:22]

Committed patchset #1 manually as r253297.