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

content/browser/android/web_contents_observer_proxy.h

 // Copyright 2015 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_ANDROID_WEB_CONTENTS_OBSERVER_PROXY_H_
 #define CONTENT_BROWSER_ANDROID_WEB_CONTENTS_OBSERVER_PROXY_H_
 
 #include <jni.h>
 
 #include "base/android/jni_weak_ref.h"
@@ skipping 14 matching lines @@
 class WebContentsObserverProxy : public WebContentsObserver {
  public:
   WebContentsObserverProxy(JNIEnv* env, jobject obj, WebContents* web_contents);
   ~WebContentsObserverProxy() override;
 
   void Destroy(JNIEnv* env, jobject obj);
 
  private:
   void RenderViewReady() override;
   void RenderProcessGone(base::TerminationStatus termination_status) override;
-  void DidStartLoading(RenderViewHost* render_view_host) override;
-  void DidStopLoading(RenderViewHost* render_view_host) override;
+  void DidStartLoading() override;
+  void DidStopLoading() override;
   void DidFailProvisionalLoad(RenderFrameHost* render_frame_host,
                               const GURL& validated_url,
                               int error_code,
                               const base::string16& error_description) override;
   void DidFailLoad(RenderFrameHost* render_frame_host,
                    const GURL& validated_url,
                    int error_code,
                    const base::string16& error_description) override;
   void DidNavigateMainFrame(const LoadCommittedDetails& details,
                             const FrameNavigateParams& params) override;
@@ skipping 31 matching lines @@
 
   JavaObjectWeakGlobalRef weak_java_observer_;
 
   DISALLOW_COPY_AND_ASSIGN(WebContentsObserverProxy);
 };
 
 bool RegisterWebContentsObserverProxy(JNIEnv* env);
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ANDROID_WEB_CONTENTS_OBSERVER_PROXY_H_