Make chrome.appWindow.create() provide access to the child window at a predictable time.

When you first create a window with chrome.appWindow.create(), it won't have
loaded any resources. So, at create time, you are guaranteed that:

	child_window.location.href == 'about:blank'
	child_window.document.documentElement.outerHTML ==
			'<html><head></head><body></body></html>'

This is in line with the behaviour of window.open().

BUG=131735
TEST=browser_tests:PlatformAppBrowserTest.WindowsApi


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=144072

Review URL: https://chromiumcodereview.appspot.com/10644006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@144356 0039d316-1c4b-4281-b951-d872f2087c98
void ResourceDispatcherHostImpl::CancelBlockedRequestsForRoute(int child_id,
                                                               int route_id) {
  ProcessBlockedRequestsForRoute(child_id, route_id, true);
}

void ResourceDispatcherHostImpl::CancelBlockedRequestsForRoute(int child_id,
                                                               int route_id) {
  ProcessBlockedRequestsForRoute(child_id, route_id, true);
}
