Convert NavigationMetricsRecorder to use the new navigation callbacks.

chrome/browser/tab_contents/navigation_metrics_recorder.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 CHROME_BROWSER_TAB_CONTENTS_NAVIGATION_METRICS_RECORDER_H_
 #define CHROME_BROWSER_TAB_CONTENTS_NAVIGATION_METRICS_RECORDER_H_
 
 #include "base/macros.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/browser/web_contents_user_data.h"
@@ skipping 20 matching lines @@
     MIME_TYPE_PDF,
     MIME_TYPE_SVG,
     MIME_TYPE_MAX
   };
 
  private:
   explicit NavigationMetricsRecorder(content::WebContents* web_contents);
   friend class content::WebContentsUserData<NavigationMetricsRecorder>;
 
   // content::WebContentsObserver overrides:
-  void DidNavigateMainFrame(
-      const content::LoadCommittedDetails& details,
-      const content::FrameNavigateParams& params) override;
+  void DidFinishNavigation(
+      content::NavigationHandle* navigation_handle) override;
 
   rappor::RapporServiceImpl* rappor_service_;
 
   DISALLOW_COPY_AND_ASSIGN(NavigationMetricsRecorder);
 };
 
 #endif  // CHROME_BROWSER_TAB_CONTENTS_NAVIGATION_METRICS_RECORDER_H_