Create swapped-out opener RVHs after a process swap.
This is required to support cross-process JavaScript calls, like postMessage.

BUG=99202
TEST=window.opener present after a cross-process navigation.

Review URL: https://chromiumcodereview.appspot.com/10171018

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@134981 0039d316-1c4b-4281-b951-d872f2087c98
35 files changed