GitLab

- Make LauncherView::CalculateIdealBounds to return last visible index;
- In LauncherView::LauncherItemAdded, use the last visible index to determine if
  we need the animation;

BUG=122482
TEST=Verify fix for issue 122482.


Review URL: http://codereview.chromium.org/10068027

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@133603 0039d316-1c4b-4281-b951-d872f2087c98