Do not allow split view to be engaged by a bezel gesture

Do not allow split view to be engaged by a bezel gesture

Remove the ability to engage split view mode with the
use of a bezel gesture, and remove BezelController
which is currently only used for this purpose.

BUG=429184
TEST=WindowManagerTest.TitleDragSwitchBetweenWindowsInSplitViewMode renamed to WindowManagerTest.ReplaceWindowsInSplitViewMode and modified,
WindowManagerTest.BezelGestureToSplitViewMode removed,
WindowManagerTest.BezelGestureToSwitchBetweenWindows removed

Committed: https://crrev.com/ee6e2e338dd8e7214e34f492a3aba08717599fd0
Cr-Commit-Position: refs/heads/master@{#302436}

[tdanderson, 2014-10-31 17:24:29]

tdanderson@chromium.org changed reviewers:
+ mukai@chromium.org

[tdanderson, 2014-10-31 17:25:04]

mukai@, can you please take a look?

[Jun Mukai, 2014-10-31 23:43:29]

lgtm

[tdanderson, 2014-11-03 15:58:17]

The CQ bit was checked by tdanderson@chromium.org

[commit-bot: I haz the power, 2014-11-03 15:59:03]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/694883002/1

[commit-bot: I haz the power, 2014-11-03 16:39:46]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-11-03 16:40:27]

Patchset 1 (id:??) landed as
https://crrev.com/ee6e2e338dd8e7214e34f492a3aba08717599fd0
Cr-Commit-Position: refs/heads/master@{#302436}