Add chrome://quota-internals/

chrome/browser/ui/webui/quota_internals_handler.h

+// 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_QUOTA_INTERNALS_HANDLER_H_
+#define CHROME_BROWSER_UI_WEBUI_QUOTA_INTERNALS_HANDLER_H_
+#pragma once
+
+#include <map>
+#include <string>
+#include <vector>
+
+#include "base/memory/ref_counted.h"
+#include "content/browser/webui/web_ui.h"
+#include "webkit/quota/quota_types.h"
+
+class Value;
+class ListValue;
+
+namespace quota_internals {
+
+class QuotaInternalsProxy;
+class GlobalData;
+class HostData;
+class OriginData;
+typedef std::map<std::string, std::string> Statistics;
+
+// This class handles message from WebUI page of chrome://quota-internals/.
+// All methods in this class can be called on UI thread.
+class QuotaInternalsHandler : public WebUIMessageHandler {
+ public:
+  QuotaInternalsHandler();
+  virtual ~QuotaInternalsHandler();
+  virtual void RegisterMessages() OVERRIDE;
+
+  // Called by QuotaInternalsProxy to report information to WebUI page.
+  void ReportAvailableSpace(int64 available_space);
+  void ReportGlobalData(const GlobalData& data);
+  void ReportHostData(const std::vector<HostData>& hosts);
+  void ReportOriginData(const std::vector<OriginData>& origins);
+  void ReportStatistics(const Statistics& stats);
+
+ private:
+  void OnRequestData(const ListValue*);
+  void SendMessage(const std::string& message, const Value& value);
+
+  scoped_refptr<QuotaInternalsProxy> proxy_;
+
+  DISALLOW_COPY_AND_ASSIGN(QuotaInternalsHandler);
+};
+
+}  // quota_internals
+
+#endif  // CHROME_BROWSER_UI_WEBUI_QUOTA_INTERNALS_HANDLER_H_