Cleanup some forward declared structs that are not being used.

chrome/browser/renderer_host/render_view_host.h

 // Copyright (c) 2006-2008 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 CHROME_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_H__
 #define CHROME_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_H__
 
 #include <string>
 #include <vector>
 
@@ skipping 12 matching lines @@
 
 class AutofillForm;
 class NavigationEntry;
 class RenderViewHostDelegate;
 class SiteInstance;
 class SkBitmap;
 class ViewMsg_Navigate;
 struct ContextMenuParams;
 struct ViewHostMsg_DidPrintPage_Params;
 struct ViewMsg_Navigate_Params;
-struct ViewMsg_Print_Params;
-struct ViewMsg_PrintPages_Params;
 struct WebDropData;
 struct WebPreferences;
 
 namespace base {
 class WaitableEvent;
 }
 
 namespace gfx {
 class Point;
 }
@@ skipping 327 matching lines @@
   bool HasUnloadListener() { return has_unload_listener_; }
 
   // If the associated view can be terminated without any side effects
   bool CanTerminate() const;
 
   // Clears the has_unload_listener_ bit since the unload handler has fired
   // and we're necessarily leaving the page.
   void UnloadListenerHasFired() { has_unload_listener_ = false; }
 
 #ifdef CHROME_PERSONALIZATION
-  // Tells the RenderView to raise an personalization event with the given name 
+  // Tells the RenderView to raise an personalization event with the given name
   // and argument.
   void RaisePersonalizationEvent(std::string event_name, std::string event_arg);
 
   HostPersonalization personalization() {
     return personalization_;
   }
 #endif
 
   // Forward a message from external host to chrome renderer.
   void ForwardMessageFromExternalHost(const std::string& target,
@@ skipping 227 matching lines @@
   virtual ~RenderViewHostFactory() {}
 
   virtual RenderViewHost* CreateRenderViewHost(
       SiteInstance* instance,
       RenderViewHostDelegate* delegate,
       int routing_id,
       base::WaitableEvent* modal_dialog_event) = 0;
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_H__