Restore focus when navigate back from detailed view in ash tray through keyboard only


BUG=314891
TEST=
see crbug.com/314891

Review URL: https://codereview.chromium.org/92663002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@238818 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 238818
telemetry: re-enable single_image and many_images in tough_canvas_cases

These tests have been disabled, because they caused trace event buffer
overflows in smoothness measurement in some cases. Now that the 'webkit'
category is filtered from the trace, this should not happen anymore.

R=tonyg@chromium.org
BUG=321815
NOTRY=True

Review URL: https://codereview.chromium.org/105323002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@238819 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 238819