Extract minimal RenderViewHost interface for embedders, leaving

chrome/browser/visitedlink/visitedlink_event_listener.cc

Index: chrome/browser/visitedlink/visitedlink_event_listener.cc
diff --git a/chrome/browser/visitedlink/visitedlink_event_listener.cc b/chrome/browser/visitedlink/visitedlink_event_listener.cc
index 1c6cfde7f81f9c34d213609f9faa3f0389b03284..c34efd82190de7bd84bb6b8d0f53904f2e4caf80 100644
--- a/chrome/browser/visitedlink/visitedlink_event_listener.cc
+++ b/chrome/browser/visitedlink/visitedlink_event_listener.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
@@ -204,7 +204,7 @@ void VisitedLinkEventListener::Observe(
     case content::NOTIFICATION_RENDER_WIDGET_VISIBILITY_CHANGED: {
       RenderWidgetHost* widget =
           content::Source<RenderWidgetHost>(source).ptr();
-      int child_id = widget->process()->GetID();
+      int child_id = widget->GetProcess()->GetID();
       if (updaters_.count(child_id))
         updaters_[child_id]->Update();
       break;