Switch NOTIFICATION_TAB_PARENTED to use WebContents.

chrome/browser/metrics/metrics_service.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.
 
 // This file defines a service that collects information about the user
 // experience in order to help improve future versions of the app.
 
 #ifndef CHROME_BROWSER_METRICS_METRICS_SERVICE_H_
 #define CHROME_BROWSER_METRICS_METRICS_SERVICE_H_
 
@@ skipping 310 matching lines @@
   void PrepareFetchWithStagedLog();
 
   // Implementation of net::URLFetcherDelegate. Called after transmission
   // completes (either successfully or with failure).
   virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE;
 
   // Logs debugging details, for the case where the server returns a response
   // code other than 200.
   void LogBadResponseCode(int response_code, bool is_xml);
 
-  // Records a window-related notification.
-  void LogWindowChange(int type,
-                       const content::NotificationSource& source,
-                       const content::NotificationDetails& details);
+  // Records a window-related notification. |window_or_tab| is either a pointer
+  // to a WebContents (for a tab) or a Browser (for a window).
+  void LogWindowOrTabChange(int type, uintptr_t window_or_tab);
 
   // Reads, increments and then sets the specified integer preference.
   void IncrementPrefValue(const char* path);
 
   // Reads, increments and then sets the specified long preference that is
   // stored as a string.
   void IncrementLongPrefsValue(const char* path);
 
   // Records a renderer process crash.
   void LogRendererCrash(content::RenderProcessHost* host,
@@ skipping 101 matching lines @@
   // The non-identifying low entropy source value.
   int low_entropy_source_;
 
   // Whether the MetricsService object has received any notifications since
   // the last time a transmission was sent.
   bool idle_since_last_transmission_;
 
   // A number that identifies the how many times the app has been launched.
   int session_id_;
 
-  // Maps NavigationControllers (corresponding to tabs) or Browser
-  // (corresponding to Windows) to a unique integer that we will use to identify
-  // it. |next_window_id_| is used to track which IDs we have used so far.
+  // Maps WebContentses (corresponding to tabs) or Browsers (corresponding to
+  // Windows) to a unique integer that we will use to identify them.
+  // |next_window_id_| is used to track which IDs we have used so far.
   typedef std::map<uintptr_t, int> WindowMap;
   WindowMap window_map_;
   int next_window_id_;
 
   // Buffer of child process notifications for quick access.  See
   // ChildProcessStats documentation above for more details.
   struct ChildProcessStats;
   std::map<string16, ChildProcessStats> child_process_stats_buffer_;
 
   // Weak pointers factory used to post task on different threads. All weak
@@ skipping 44 matching lines @@
   friend bool prerender::IsOmniboxEnabled(Profile* profile);
   friend class extensions::ExtensionDownloader;
 
   // Returns true if prefs::kMetricsReportingEnabled is set.
   static bool IsMetricsReportingEnabled();
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(MetricsServiceHelper);
 };
 
 #endif  // CHROME_BROWSER_METRICS_METRICS_SERVICE_H_