GitLab

- Refactoring and bug fixes 
- Remove global variables of class type.

NOTE: I'm landing this for Ronghua since he's on leave.  The change has already been reviewed here: http://codereview.chromium.org/8790011/
but I had to create a new issue in order to resolve merge conflicts.



TBR=sergeyu

Review URL: http://codereview.chromium.org/8802019

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@113086 0039d316-1c4b-4281-b951-d872f2087c98