Remove RenderViewHost parameter from WebContentsObserver::Did{Start|Stop}Loading.

content/browser/web_contents/web_contents_impl.h

 // 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.
 
 #ifndef CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
 #define CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 642 matching lines @@
   // Sets the passed interstitial as the currently showing interstitial.
   // No interstitial page should already be attached.
   void AttachInterstitialPage(InterstitialPageImpl* interstitial_page) override;
 
   // Unsets the currently showing interstitial.
   void DetachInterstitialPage() override;
 
   // Changes the IsLoading state and notifies the delegate as needed.
   // |details| is used to provide details on the load that just finished
   // (but can be null if not applicable).
-  void SetIsLoading(RenderViewHost* render_view_host,
-                    bool is_loading,
+  void SetIsLoading(bool is_loading,
                     bool to_different_document,
                     LoadNotificationDetails* details) override;
 
   typedef base::Callback<void(WebContents*)> CreatedCallback;
 
   // Requests the renderer to move the selection extent to a new position.
   void MoveRangeSelectionExtent(const gfx::Point& extent);
 
   // Requests the renderer to select the region between two points in the
   // currently focused frame.
@@ skipping 608 matching lines @@
   // Adds/removes a callback called on creation of each new WebContents.
   static void AddCreatedCallbackForTesting(const CreatedCallback& callback);
   static void RemoveCreatedCallbackForTesting(const CreatedCallback& callback);
 
   DISALLOW_COPY_AND_ASSIGN(FriendZone);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_