Disable the ShelfAppBrowserTest.DragAndDrop since it is flaky.

This test moves the mouse and then expects that doing RunUntilIdle() on
MessageLoop::current() will have handled all input events. However with
a real compositor, resize locks cause events to be deferred and this
assertion is incorrect. This flakiness will become apparent when we
stop using the "test compositor" in browser tests in order to test the
code paths we ship.

For now, the flakiness can be easily reproduced with the
--disable-test-compositor command line flag.

R=jamescook@chromium.org
BUG=331924,270918

Review URL: https://codereview.chromium.org/141733003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@246074 0039d316-1c4b-4281-b951-d872f2087c98
autoclick: Ignore synthetic mouse-move events,

Synthetic mouse-move events are generated on various occasions (e.g. when
a window shows up, hides, moves, or transforms). Ignore these events for
autoclick.

BUG=none
R=jamescook@chromium.org, tengs@chromium.org

Review URL: https://codereview.chromium.org/142463002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@246075 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 246075
aura: Fix dispatching 'held' events when root-window has a non-identity transform.

Events dispatched from EventSource (i.e. WindowTreeHostX11) to EventProcessor
(i.e. RootWindow) is in the coordinate system of the source. So it is necessary
to apply the appropriate transform of the processor before dispatch. However,
'held' events are already in the coordinate system of the processor. So it is
not necessary to apply the transform on the events a second time.

BUG=336029, 334301
R=sky@chromium.org

Review URL: https://codereview.chromium.org/143623002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@246076 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 246076