move favicon download code from chrome/ into content/

content/public/browser/favicon_download_delegate.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_DOWNLOAD_HELPER_DELEGATE_H_
-#define CHROME_BROWSER_FAVICON_FAVICON_DOWNLOAD_HELPER_DELEGATE_H_
+#ifndef CONTENT_PUBLIC_BROWSER_FAVICON_DOWNLOAD_DELEGATE_H_
+#define CONTENT_PUBLIC_BROWSER_FAVICON_DOWNLOAD_DELEGATE_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
 
 class GURL;
 class SkBitmap;
+
+namespace content {
 struct FaviconURL;
+}
 
-// This class provides a delegate interface for a FaviconDownloadHelper.  It
-// allows the FaviconDownloadHelper to pass favicon data back to its caller.
-class FaviconDownloadHelperDelegate {
+namespace content {
+
+// This class provides a delegate interface for a Favicon Download requests. It
+// allows WebContents to pass favicon data back to its caller.
+class FaviconDownloadDelegate {
  public:
   // Called when the icon at |image_url| has been downloaded.
   // |bitmaps| is a list of all the frames of the icon at |image_url|.
-  virtual void OnDidDownloadFavicon(
+  virtual void DidDownloadFavicon(
       int id,
       const GURL& image_url,
       bool errored,
       int requested_size,
       const std::vector<SkBitmap>& bitmaps) {}
 
-  // Message Handler.
-  virtual void OnUpdateFaviconURL(
+  // Called when the favicon url of the page is updated.
+  virtual void UpdateFaviconURL(
       int32 page_id,
       const std::vector<FaviconURL>& candidates) {}
 
  protected:
-  virtual ~FaviconDownloadHelperDelegate() {}
+  virtual ~FaviconDownloadDelegate() {}
 };
 
-#endif  // CHROME_BROWSER_FAVICON_FAVICON_DOWNLOAD_HELPER_DELEGATE_H_
+} // namespace content
+
+#endif  // CONTENT_PUBLIC_BROWSER_FAVICON_DOWNLOAD_DELEGATE_H_