1 files changed, 58 insertions, 0 deletions
diff --git a/chrome/browser/ui/webui/favicon_source.h b/chrome/browser/ui/webui/favicon_source.h
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+++ b/chrome/browser/ui/webui/favicon_source.h
@@ -0,0 +1,58 @@
+// Copyright (c) 2011 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_UI_WEBUI_FAVICON_SOURCE_H_
+#define CHROME_BROWSER_UI_WEBUI_FAVICON_SOURCE_H_
+#pragma once
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/ref_counted.h"
+#include "chrome/browser/favicon_service.h"
+#include "chrome/browser/ui/webui/chrome_url_data_manager.h"
+
+class GURL;
+class Profile;
+
+// FavIconSource is the gateway between network-level chrome:
+// requests for favicons and the history backend that serves these.
+class FavIconSource : public ChromeURLDataManager::DataSource {
+ public:
+  explicit FavIconSource(Profile* profile);
+
+  // Called when the network layer has requested a resource underneath
+  // the path we registered.
+  virtual void StartDataRequest(const std::string& path,
+                                bool is_off_the_record,
+                                int request_id);
+
+  virtual std::string GetMimeType(const std::string&) const;
+
+  virtual bool ShouldReplaceExistingSource() const;
+
+ private:
+  // Called when favicon data is available from the history backend.
+  void OnFavIconDataAvailable(FaviconService::Handle request_handle,
+                              bool know_favicon,
+                              scoped_refptr<RefCountedMemory> data,
+                              bool expired,
+                              GURL url);
+
+  // Sends the default favicon.
+  void SendDefaultResponse(int request_id);
+
+  virtual ~FavIconSource();
+
+  Profile* profile_;
+  CancelableRequestConsumerT<int, 0> cancelable_consumer_;
+
+  // Raw PNG representation of the favicon to show when the favicon
+  // database doesn't have a favicon for a webpage.
+  scoped_refptr<RefCountedMemory> default_favicon_;
+
+  DISALLOW_COPY_AND_ASSIGN(FavIconSource);
+};
+
+#endif  // CHROME_BROWSER_UI_WEBUI_FAVICON_SOURCE_H_