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
  virtual bool Visit(content::RenderView* render_view) {
    if (render_view->GetRoutingID() == route_id_) {
      view_ = render_view;
      return false;
    }
    return true;
  }

  virtual bool Visit(content::RenderView* render_view) {
    if (render_view->GetRoutingID() == route_id_) {
      view_ = render_view;
      return false;
    }
    return true;
  }
