Pass the render view host with all provisional load related callbacks on the web contents observer

chrome/browser/instant/instant_loader.cc

 // 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.
 
 #include "chrome/browser/instant/instant_loader.h"
 
 #include <algorithm>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 243 matching lines @@
   virtual void WillShowConstrainedWindow(TabContentsWrapper* source) OVERRIDE;
   virtual bool ShouldFocusConstrainedWindow() OVERRIDE;
 
   // content::WebContentsObserver:
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
   virtual void DidFailProvisionalLoad(
       int64 frame_id,
       bool is_main_frame,
       const GURL& validated_url,
       int error_code,
-      const string16& error_description) OVERRIDE;
+      const string16& error_description,
+      content::RenderViewHost* render_view_host) OVERRIDE;
 
  private:
   typedef std::vector<scoped_refptr<history::HistoryAddPageArgs> >
       AddPageVector;
 
   // Message from renderer indicating the page has suggestions.
   void OnSetSuggestions(
       int32 page_id,
       const std::vector<std::string>& suggestions,
       InstantCompleteBehavior behavior);
@@ skipping 289 matching lines @@
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
 void InstantLoader::TabContentsDelegateImpl::DidFailProvisionalLoad(
     int64 frame_id,
     bool is_main_frame,
     const GURL& validated_url,
     int error_code,
-    const string16& error_description) {
+    const string16& error_description,
+    content::RenderViewHost* render_view_host) {
   if (validated_url == loader_->url_) {
     // This typically happens with downloads (which are disabled with
     // instant active). To ensure the download happens when the user presses
     // enter we set needs_reload_ to true, which triggers a reload.
     loader_->needs_reload_ = true;
   }
 }
 
 void InstantLoader::TabContentsDelegateImpl::OnSetSuggestions(
     int32 page_id,
@@ skipping 568 matching lines @@
     host->Send(new ChromeViewMsg_SearchBoxResize(
         host->GetRoutingID(), GetOmniboxBoundsInTermsOfPreview()));
   } else {
     host->Send(new ChromeViewMsg_SearchBoxChange(
         host->GetRoutingID(), user_text, verbatim, 0, 0));
   }
 
   frame_load_observer_.reset(new FrameLoadObserver(
       this, preview_contents()->web_contents(), user_text, verbatim));
 }