GitLab

Get rid of last gpu_messages.h dependency in chrome by having chrome ask the GPUProcessHostUIShim to hang/crash/clean the gpu process.

BUG=98716
Review URL: http://codereview.chromium.org/8548014

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@110802 0039d316-1c4b-4281-b951-d872f2087c98