GitLab

Introduced SnapToPixelLayoutManager and used where it makes sense.
WorkspaceLayoutManager uses WindowState, so it's the property is manually set there.


This depends on the following CL:
https://codereview.chromium.org/375693006/

BUG=391822

Review URL: https://codereview.chromium.org/357063002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@284119 0039d316-1c4b-4281-b951-d872f2087c98