GitLab

Also untangle clearView implementation from picture listener enabled.
Add some comments and removed some error logs.

BUG=

Review URL: https://codereview.chromium.org/136753015

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@248595 0039d316-1c4b-4281-b951-d872f2087c98