Cleanup in chrome/browser

- make more things const
- remove unreferenced declaration of GetGoButton
- fix indentation in one place

Review URL: http://codereview.chromium.org/53053

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@12475 0039d316-1c4b-4281-b951-d872f2087c98
14 files changed