- Set active root window early when creating browsers on startup.
- Send screen info when device scale factor chagned.
- gfx::Screen::GetDisplayNearestWindow should return Primary when the window's root doesn't exist. I missed this condition in https://chromiumcodereview.appspot.com/10961021
BUG=155201, 152728
TEST=manual: see bug for repro steps
Review URL: https://chromiumcodereview.appspot.com/11066130
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@161758 0039d316-1c4b-4281-b951-d872f2087c98