GitLab

[Mac] UI fixes to the new avatar bubble.

- the bottom options buttons get a blue background when hovered over
- corrected the spacing between a button's image and its title.
- s/makeAccountButtonWithRect/accountButtonWithRect/g to be 
consistent with the other control-making methods.

Screenshot: https://drive.google.com/file/d/0B1B1Up4p2NRMeERscUNleHNMWWc/edit?usp=sharing

BUG=324036

Review URL: https://codereview.chromium.org/132903016

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@247910 0039d316-1c4b-4281-b951-d872f2087c98