GitLab

- When initializing the WebContents for Android pull the
WindowId from the TabModel and push it to the SessionTabHelper.

BUG=277135
NOTRY=true

Review URL: https://chromiumcodereview.appspot.com/23792002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@221798 0039d316-1c4b-4281-b951-d872f2087c98