Add basic threaded compositor test to gpu_feature_browsertest.cc
Add basic threaded compositor test to gpu_feature_browsertest.cc

BUG=113159,116438


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=124346

Review URL: http://codereview.chromium.org/9509001

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@124562 0039d316-1c4b-4281-b951-d872f2087c98

ropik/chromium,gavinp/chromium,gavinp/chromium,adobe/chromium,adobe/chromium,adobe/chromium,ropik/chromium,ropik/chromium,gavinp/chromium,yitian134/chromium,ropik/chromium,yitian134/chromium,ropik/chromium,yitian134/chromium,ropik/chromium,gavinp/chromium,yitian134/chromium,adobe/chromium,adobe/chromium,adobe/chromium,yitian134/chromium,ropik/chromium,yitian134/chromium,yitian134/chromium,adobe/chromium,adobe/chromium,gavinp/chromium,ropik/chromium,yitian134/chromium,gavinp/chromium,yitian134/chromium,adobe/chromium,adobe/chromium,gavinp/chromium,adobe/chromium,gavinp/chromium,yitian134/chromium,gavinp/chromium,gavinp/chromium,ropik/chromium