Create favicon_url mirror in components/favicon.

components/favicon/core/favicon_url.cc

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright 2014 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 "content/public/common/favicon_url.h"
+#include "components/favicon/core/favicon_url.h"
 
-namespace content {
+namespace favicon {
 
 FaviconURL::FaviconURL()
-  : icon_type(INVALID_ICON) {
+  : icon_type(favicon_base::INVALID_ICON) {
 }
 
 FaviconURL::FaviconURL(const GURL& url,
-                       IconType type,
+                       favicon_base::IconType type,
                        const std::vector<gfx::Size>& sizes)
     : icon_url(url), icon_type(type), icon_sizes(sizes) {}
 
 FaviconURL::~FaviconURL() {
 }
 
-} // namespace content
+} // namespace favicon