Revert 228045 "Treat all coordinates to RWHVA::SetBounds() as sc..."

> Treat all coordinates to RWHVA::SetBounds() as screen coordinates.
> 
> This is a speculative re-upload, in the hopes that random crashes we are seeing on the ChromeOS waterfall will have been fixed by Issue 268648 (issue is not re-producible anywhere but the waterfall).  If CrOS waterfall begins experiencing memory corruption errors, this change should be reverted.
> 
> BUG=176221
> TBR=sky
> 
> Review URL: https://codereview.chromium.org/24901003

TBR=zturner@chromium.org

Review URL: https://codereview.chromium.org/26489008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@228071 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 228071
CHECK to only receive touch/gesture events in touch selection tests

Added a CHECK in touch selection tests to make sure that we only receive
touch or gesture events. Currently, some touch selection tests are flaky
because sometimes they receive unexpected mouse events that end touch
selection in the middle of the test. This CHECK will give us stack trace
to investigate the situation.

BUG=235991,276870

Review URL: https://codereview.chromium.org/26275005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@228072 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 228072