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

chrome/browser/favicon/favicon_tab_helper.cc

 // 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.
 
 #include "chrome/browser/favicon/favicon_tab_helper.h"
 
 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/favicon/favicon_handler.h"
 #include "chrome/browser/favicon/favicon_service_factory.h"
@@ skipping 173 matching lines @@
 
 void FaviconTabHelper::DidNavigateMainFrame(
     const content::LoadCommittedDetails& details,
     const content::FrameNavigateParams& params) {
   favicon_urls_.clear();
   // Get the favicon, either from history or request it from the net.
   FetchFavicon(details.entry->GetURL());
 }
 
 void FaviconTabHelper::DidUpdateFaviconURL(
-    int32 page_id,
     const std::vector<content::FaviconURL>& candidates) {
   DCHECK(!candidates.empty());
   favicon_urls_ = candidates;
 
-  favicon_handler_->OnUpdateFaviconURL(page_id, candidates);
+  favicon_handler_->OnUpdateFaviconURL(candidates);
   if (touch_icon_handler_.get())
-    touch_icon_handler_->OnUpdateFaviconURL(page_id, candidates);
+    touch_icon_handler_->OnUpdateFaviconURL(candidates);
 }
 
 FaviconService* FaviconTabHelper::GetFaviconService() {
   return FaviconServiceFactory::GetForProfile(profile_,
                                               Profile::EXPLICIT_ACCESS);
 }
 
 bool FaviconTabHelper::IsBookmarked(const GURL& url) {
   BookmarkModel* bookmark_model = BookmarkModelFactory::GetForProfile(profile_);
   return bookmark_model && bookmark_model->IsBookmarked(url);
@@ skipping 14 matching lines @@
       favicon_service->UnableToDownloadFavicon(image_url);
   }
 
   favicon_handler_->OnDidDownloadFavicon(
       id, image_url, bitmaps, original_bitmap_sizes);
   if (touch_icon_handler_.get()) {
     touch_icon_handler_->OnDidDownloadFavicon(
         id, image_url, bitmaps, original_bitmap_sizes);
   }
 }