GitLab

Renamed NOTIFICATION_WEB_CONTENTS_HIDDEN to NOTIFICATION_WEB_CONTENTS_VISIBILITY_CHANGED and
updated all appropriate places. We check for the detail false if we meant to check if the
WebContents is hidden. This matches the behavior of RenderWidget's
NOTIFICATION_RENDER_WIDGET_VISIBILITY_CHANGED.

Added a WasRestored method to WebContents public interface.
Call WasRestored from WebContents::ShowContents

BUG=128814
TEST=did not break existing autofill popup browser test

Review URL: https://chromiumcodereview.appspot.com/10411033

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@138372 0039d316-1c4b-4281-b951-d872f2087c98