Cleanup: Stop creating RenderViewObservers from chrome/ in RenderViewer.

content/renderer/render_view_observer.h

 // Copyright (c) 2011 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.
 
 #ifndef CONTENT_RENDERER_RENDER_VIEW_OBSERVER_H_
 #define CONTENT_RENDERER_RENDER_VIEW_OBSERVER_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "ipc/ipc_channel.h"
@@ skipping 27 matching lines @@
                                       const WebKit::WebURLError& error) {}
   virtual void DidCommitProvisionalLoad(WebKit::WebFrame* frame,
                                         bool is_new_navigation) {}
   virtual void DidCreateDocumentElement(WebKit::WebFrame* frame) {}
   virtual void FrameDetached(WebKit::WebFrame* frame) {}
   virtual void FrameWillClose(WebKit::WebFrame* frame) {}
   virtual void WillSubmitForm(WebKit::WebFrame* frame,
                               const WebKit::WebFormElement& form) {}
   virtual void DidCreateDataSource(WebKit::WebFrame* frame,
                                    WebKit::WebDataSource* ds) {}
+  virtual void PrintPage(WebKit::WebFrame* frame) {}
 
   // These match the RenderView methods below.
   virtual void FrameTranslated(WebKit::WebFrame* frame) {}
   virtual void DidHandleMouseEvent(const WebKit::WebMouseEvent& event) {}
   virtual void PageCaptured(const string16& page_text,
                             bool preliminary_capture) {}
 
  protected:
-  RenderViewObserver(RenderView* render_view);
+  explicit RenderViewObserver(RenderView* render_view);
   virtual ~RenderViewObserver();
 
   // IPC::Channel::Listener implementation.
   virtual bool OnMessageReceived(const IPC::Message& message);
 
   // IPC::Message::Sender implementation.
   virtual bool Send(IPC::Message* message);
 
   RenderView* render_view() { return render_view_; }
   int routing_id() { return routing_id_; }
 
  private:
   friend class RenderView;
 
   void set_render_view(RenderView* rv) { render_view_ = rv; }
 
   RenderView* render_view_;
   // The routing ID of the associated RenderView.
   int routing_id_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderViewObserver);
 };
 
 #endif  // CONTENT_RENDERER_RENDER_VIEW_OBSERVER_H_