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

content/browser/web_contents/aura/overscroll_navigation_overlay.h

 // Copyright 2014 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_AURA_OVERSCROLL_NAVIGATION_OVERLAY_H_
 #define CONTENT_BROWSER_WEB_CONTENTS_AURA_OVERSCROLL_NAVIGATION_OVERLAY_H_
 
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
 #include "content/browser/web_contents/aura/window_slider.h"
@@ skipping 71 matching lines @@
   // Overridden from WindowSlider::Delegate:
   ui::Layer* CreateBackLayer() override;
   ui::Layer* CreateFrontLayer() override;
   void OnWindowSlideCompleting() override;
   void OnWindowSlideCompleted(scoped_ptr<ui::Layer> layer) override;
   void OnWindowSlideAborted() override;
   void OnWindowSliderDestroyed() override;
 
   // Overridden from WebContentsObserver:
   void DidFirstVisuallyNonEmptyPaint() override;
-  void DidStopLoading(RenderViewHost* host) override;
+  void DidStopLoading() override;
 
   // The WebContents which is being navigated.
   WebContentsImpl* web_contents_;
 
   // The screenshot overlay window.
   scoped_ptr<aura::Window> window_;
 
   // This is the WindowDelegate of |window_|. The delegate manages its own
   // lifetime (destroys itself when |window_| is destroyed).
   aura_extra::ImageWindowDelegate* image_delegate_;
@@ skipping 19 matching lines @@
 
   // The LayerDelegate used for the back/front layers during a slide.
   scoped_ptr<ImageLayerDelegate> layer_delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(OverscrollNavigationOverlay);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_WEB_CONTENTS_AURA_OVERSCROLL_NAVIGATION_OVERLAY_H_