GitLab

Change log:
  Don't allow other extensions to connect to ChromeVox.
  Support braille captions on all platforms except Android.
  Unhide console tts and braille caption commands.
  Allow the web author to disable reading the page title on load.
  Handle click events through our event queue for non-Android platforms.
  Corner case fixes for expanding braille translation.
  Consider visibility when counting number of list items.

BUG=362808
TBR=dtseng@chromium.org

Review URL: https://codereview.chromium.org/237433002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@263729 0039d316-1c4b-4281-b951-d872f2087c98