Implementation of the Extension Activity Log UI behind a flag.

chrome/browser/ui/webui/extensions/extension_activity_ui.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_UI_WEBUI_EXTENSIONS_EXTENSION_ACTIVITY_UI_H_
+#define CHROME_BROWSER_UI_WEBUI_EXTENSIONS_EXTENSION_ACTIVITY_UI_H_
+#pragma once
+
+#include "chrome/browser/extensions/extension_activity_log.h"
+#include "content/public/browser/web_ui_controller.h"
+
+class ExtensionActivityUI : public content::WebUIController,
+                            public ExtensionActivityLog::Observer {
+ public:
+  explicit ExtensionActivityUI(content::WebUI* web_ui);
+  virtual ~ExtensionActivityUI();
+
+  // Callback for "requestExtensionData".
+  void HandleRequestExtensionData(const base::ListValue* args);
+
+  // ExtensionActivityLog::Observer implementation.
+  virtual void OnExtensionActivity(const Extension* extension,
+                                   ExtensionActivityLog::Activity activity,
+                                   const std::string& msg) OVERRIDE;
+
+ private:
+  const Extension* extension_;
+
+  DISALLOW_COPY_AND_ASSIGN(ExtensionActivityUI);
+};
+
+#endif  // CHROME_BROWSER_UI_WEBUI_EXTENSIONS_EXTENSION_ACTIVITY_UI_H_