Attaching a DOM Activity Logger to all extension scripts

chrome/renderer/extensions/dom_activity_logger.h

+// Copyright (c) 2013 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_RENDERER_EXTENSIONS_DOM_ACTIVITY_LOGGER_H_
+#define CHROME_RENDERER_EXTENSIONS_DOM_ACTIVITY_LOGGER_H_
+
+#include <string>
+
+#include "base/string_piece.h"
+#include "googleurl/src/gurl.h"
+#include "third_party/WebKit/Source/Platform/chromium/public/WebString.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebDOMActivityLogger.h"
+#include "v8/include/v8.h"
+
+using WebKit::WebString;
+
+namespace extensions {
+
+class DOMActivityLogger: public WebKit::WebDOMActivityLogger {
+ public:
+  static const int kMainWorldId = 0;
+  DOMActivityLogger(const std::string& extension_id,
+                    const GURL& url,
+                    const string16& title);
+
+  // Marshalls the arguments into an ExtensionHostMsg_DOMAction_Params
+  // and sends it over to the browser (via IPC) for appending it to the
+  // extension activity log.
+  // (Overrides the log method in WebKit::WebDOMActivityLogger)
+  virtual void log(const WebString& api_name,
+                   int argc,
+                   const v8::Handle<v8::Value> argv[],
+                   const WebString& extra_info);
+
+  // If extension activity logging is enabled then check (using the
+  // WebKit API) if there is no logger attached to the world corresponding
+  // to world_id, and if so, construct a new logger and attach it.
+  // worl_id = 0 indicates the main world.
+  static void AttachToWorld(int world_id,
+                            const std::string& extension_id,
+                            const GURL& url,
+                            const string16& title);
+
+ private:
+  std::string extension_id_;
+  GURL url_;
+  string16 title_;
+
+  DISALLOW_COPY_AND_ASSIGN(DOMActivityLogger);
+};
+
+}  // namespace extensions
+
+#endif  // CHROME_RENDERER_EXTENSIONS_DOM_ACTIVITY_LOGGER_H_
+