Revert 113676 - Attempt 2 at : Makes tests either use mock compositor or mock

WebGraphicsContext3D depending upon which compositor we're
running. This is needed to enable ui tests on the bots.

I reverted first attempt as it broke some browser_tests. I've
straightened that out in another patch, so this should be good go
again. TBR since it's the same patch as before.

BUG=104360
TEST=none
TBR=ben@chromium.org

Review URL: http://codereview.chromium.org/8889022

TBR=sky@chromium.org
Review URL: http://codereview.chromium.org/8873037

git-svn-id: http://src.chromium.org/svn/trunk/src/build@113683 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

all.gyp

@@ -617,7 +617,6 @@
           'dependencies': [
             '../chrome/chrome.gyp:chrome',
             '../chrome/chrome.gyp:unit_tests',
-            '../chrome/chrome.gyp:ui_tests',
             '../ui/aura_shell/aura_shell.gyp:aura_shell_exe',
             '../ui/aura_shell/aura_shell.gyp:aura_shell_unittests',
             '../ui/aura/aura.gyp:*',