Remove PurgeMemory() from the proxy service.  The MemoryPurger is gone, so this
is unused.

BUG=350455
TEST=none
R=eroman@chromium.org

Review URL: https://codereview.chromium.org/193883002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@256301 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 256301
Do not set RootView's gesture handler on last ET_GESTURE_END

There might be cases that a RootView is trying to dispatch an
ET_GESTURE_END event and no gesture handler is set for that. In such
cases, after the event is handled by a view, it should not set that view
as the gesture handler for the RootView, since that gesture sequence is
finished.

BUG=334968

Review URL: https://codereview.chromium.org/190663017

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@256302 0039d316-1c4b-4281-b951-d872f2087c98
Removing the use of base::Time inside the LayerTreeHost system.

First step before removing Now() usage from the class.

DEPS=194543002
BUG=345459

Review URL: https://codereview.chromium.org/178103004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@256303 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 256303