Removing the app launcher button in the ChromeOS browser and making the app launcher pinned to the location bar.

BUG=3190
TEST=The app launcher icon on the top-left corner of the browser should
     be gone.  Opening a new tab by pressing the + button or typing
     CTRL-T should bring the app launcher, it should be located on top
     of the location bar.

Review URL: http://codereview.chromium.org/2060004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@47314 0039d316-1c4b-4281-b951-d872f2087c98
19 files changed