Remove page IDs from three WebContentsObserver APIs that don't need it.

content/public/browser/notification_types.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 CONTENT_PUBLIC_BROWSER_NOTIFICATION_TYPES_H_
 #define CONTENT_PUBLIC_BROWSER_NOTIFICATION_TYPES_H_
 
 // This file describes various types used to describe and filter notifications
 // that pass through the NotificationService.
 //
@@ skipping 54 matching lines @@
   //
   // This will NOT be sent on navigation, interested parties should also
   // listen for NAV_ENTRY_COMMITTED to handle that case. This will be
   // sent when the entry is updated outside of navigation (like when a new
   // title comes).
   NOTIFICATION_NAV_ENTRY_CHANGED,
 
   // Other load-related (not from NavigationController) ----------------------
 
   // Corresponds to ViewHostMsg_DocumentOnLoadCompletedInMainFrame. The source
-  // is the WebContents and the details the page_id.
+  // is the WebContents.
   // DEPRECATED: Use WebContentsObserver::DocumentOnLoadCompletedInMainFrame()
   NOTIFICATION_LOAD_COMPLETED_MAIN_FRAME,
 
   // A content load is starting.  The source will be a
   // Source<NavigationController> corresponding to the tab in which the load
   // is occurring.  No details are expected for this notification.
   // DEPRECATED: Use WebContentsObserver::DidStartLoading()
   NOTIFICATION_LOAD_START,
 
   // A content load has stopped. The source will be a
@@ skipping 128 matching lines @@
   // the RenderViewHost, and the details is a DomOperationNotificationDetails.
   NOTIFICATION_DOM_OPERATION_RESPONSE,
 
   // Custom notifications used by the embedder should start from here.
   NOTIFICATION_CONTENT_END,
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_NOTIFICATION_TYPES_H_