Fix favicon exact match logic and add test.

chrome/browser/favicon/favicon_handler.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 CHROME_BROWSER_FAVICON_FAVICON_HANDLER_H_
 #define CHROME_BROWSER_FAVICON_FAVICON_HANDLER_H_
 #pragma once
 
 #include <map>
 
@@ skipping 97 matching lines @@
 
   // Processes the current image_irls_ entry, requesting the image from the
   // history / download service.
   void ProcessCurrentUrl();
 
   void OnDidDownloadFavicon(int id,
                             const GURL& image_url,
                             bool errored,
                             const gfx::Image& image);
 
+  // For testing.
+  const std::deque<FaviconURL>& image_urls() const { return image_urls_; }
+
  protected:
   // These virtual methods make FaviconHandler testable and are overridden by
   // TestFaviconHandler.
 
   // Return the NavigationEntry for the active entry, or NULL if the active
   // entries URL does not match that of the URL last passed to FetchFavicon.
   virtual content::NavigationEntry* GetEntry();
 
   // Asks the render to download favicon, returns the request id.
   virtual int DownloadFavicon(const GURL& image_url, int image_size);
@@ skipping 159 matching lines @@
   // This handler's delegate.
   FaviconHandlerDelegate* delegate_;  // weak
 
   // Current favicon candidate.
   FaviconCandidate favicon_candidate_;
 
   DISALLOW_COPY_AND_ASSIGN(FaviconHandler);
 };
 
 #endif  // CHROME_BROWSER_FAVICON_FAVICON_HANDLER_H_