Revert of Expose GlobalRequestID in NavigationHandle and ResourceRequestInfo.

chrome/browser/data_use_measurement/data_use_web_contents_observer.h

 // Copyright 2016 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_DATA_USE_MEASUREMENT_DATA_USE_WEB_CONTENTS_OBSERVER_H_
 #define CHROME_BROWSER_DATA_USE_MEASUREMENT_DATA_USE_WEB_CONTENTS_OBSERVER_H_
 
 #include "base/macros.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/browser/web_contents_user_data.h"
@@ skipping 14 matching lines @@
 // observe all WebContents.
 class DataUseWebContentsObserver
     : public content::WebContentsObserver,
       public content::WebContentsUserData<DataUseWebContentsObserver> {
  public:
   // Creates a DataUseWebContentsObserver for the given WebContents.
   static void CreateForWebContents(content::WebContents* web_contents);
 
   ~DataUseWebContentsObserver() override;
 
-  // WebContentsObserver implementation:
+  // WebContentsObserver:
+  // Called when a render frame host is created.
   void RenderFrameCreated(content::RenderFrameHost* render_frame_host) override;
+
+  // Called when a render frame host is deleted.
   void RenderFrameDeleted(content::RenderFrameHost* render_frame_host) override;
+
+  // Called when a navigation is started.
   void DidStartNavigation(
       content::NavigationHandle* navigation_handle) override;
-  void ReadyToCommitNavigation(
+
+  // Called when a navigation is completed.
+  void DidFinishNavigation(
       content::NavigationHandle* navigation_handle) override;
+
+  // Called when a navigation is redirected.
   void DidRedirectNavigation(
       content::NavigationHandle* navigation_handle) override;
 
  private:
   friend class content::WebContentsUserData<DataUseWebContentsObserver>;
 
   DataUseWebContentsObserver(content::WebContents* web_contents,
                              ChromeDataUseAscriberService* service);
   ChromeDataUseAscriberService* const service_;
 
   DISALLOW_COPY_AND_ASSIGN(DataUseWebContentsObserver);
 };
 
 }  // namespace data_use_measurement
 
 #endif  // CHROME_BROWSER_DATA_USE_MEASUREMENT_DATA_USE_WEB_CONTENTS_OBSERVER_H_