GitLab

Previously Desktop.dispatchKeyEvent() was sending keyboard events to
the host and then pretending that it didn't handle the event. Now it
returns correct result telling the caller when the event was handled.

BUG=385972

Review URL: https://codereview.chromium.org/341693004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@278331 0039d316-1c4b-4281-b951-d872f2087c98