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

chrome/browser/ui/ash/launcher/launcher_favicon_loader_browsertest.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/ui/ash/launcher/launcher_favicon_loader.h"
 
 #include "ash/shelf/shelf_constants.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/stringprintf.h"
 #include "chrome/browser/ui/browser.h"
@@ skipping 29 matching lines @@
 
   // WebContentsObserver overrides.
   virtual void DidFinishLoad(
       int64 frame_id,
       const GURL& validated_url,
       bool is_main_frame,
       content::RenderViewHost* render_view_host) OVERRIDE {
     loaded_ = true;
   }
 
-  virtual void DidUpdateFaviconURL(int32 page_id,
+  virtual void DidUpdateFaviconURL(
       const std::vector<content::FaviconURL>& candidates) OVERRIDE {
     if (!candidates.empty())
       got_favicons_ = true;
   }
 
  private:
   bool loaded_;
   bool got_favicons_;
 };
 
@@ skipping 119 matching lines @@
   EXPECT_TRUE(favicon_loader_->GetFavicon().empty());
   ASSERT_NO_FATAL_FAILURE(ResetDownloads());
 
   ASSERT_TRUE(NavigateTo("launcher-largefavicon.html"));
   ASSERT_TRUE(WaitForContentsLoaded());
   EXPECT_TRUE(WaitForFaviconUpdated());
 
   EXPECT_FALSE(favicon_loader_->GetFavicon().empty());
   EXPECT_EQ(128, favicon_loader_->GetFavicon().height());
 }