Move RenderProcessObserver and RenderViewVisitor to content\public\renderer and put them in the c...

content/public/renderer/render_view_visitor.h

Index: content/public/renderer/render_view_visitor.h
===================================================================
--- content/public/renderer/render_view_visitor.h	(revision 103758)
+++ content/public/renderer/render_view_visitor.h	(working copy)
@@ -2,12 +2,14 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CONTENT_RENDERER_RENDER_VIEW_VISITOR_H_
-#define CONTENT_RENDERER_RENDER_VIEW_VISITOR_H_
+#ifndef CONTENT_PUBLIC_RENDERER_RENDER_VIEW_VISITOR_H_
+#define CONTENT_PUBLIC_RENDERER_RENDER_VIEW_VISITOR_H_
 #pragma once
 
 class RenderView;
 
+namespace content {
+
 class RenderViewVisitor {
  public:
   // Return true to continue visiting RenderViews or false to stop.
@@ -17,4 +19,6 @@
   virtual ~RenderViewVisitor() {}
 };
 
-#endif  // CONTENT_RENDERER_RENDER_VIEW_VISITOR_H_
+}  // namespace content
+
+#endif  // CONTENT_PUBLIC_RENDERER_RENDER_VIEW_VISITOR_H_