GitLab

 - didReceiveMessageError() handling
 - didStartClosingHandshake() handling
 - didReceive* state_ checking
 - MayForceCallback handling

BUG=87310
TEST=ui_tests --gtest_filter='PPAPITest.WebSocket*'

Review URL: http://codereview.chromium.org/8772001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@112820 0039d316-1c4b-4281-b951-d872f2087c98