Chrome Performance Monitor: Metric API Functions.

chrome/browser/ui/webui/performance_monitor/web_ui_handler.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_PERFORMANCE_MONITOR_WEB_UI_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_PERFORMANCE_MONITOR_WEB_UI_HANDLER_H_
 
 #include "base/compiler_specific.h"
 #include "base/memory/weak_ptr.h"
 #include "content/public/browser/web_ui_message_handler.h"
 
 namespace base {
 class ListValue;
 class Time;
+class Value;
 }  // namespace base
 
 namespace performance_monitor {
 
 // This class handles messages to and from the performance monitor page.
 // Incoming calls are handled by the Handle* functions and callbacks are made
 // from ReturnResults functions.
 class WebUIHandler : public content::WebUIMessageHandler,
                      public base::SupportsWeakPtr<WebUIHandler> {
  public:
   WebUIHandler();
 
  private:
   virtual ~WebUIHandler();
 
   // WebUIMessageHandler implementation.
   virtual void RegisterMessages() OVERRIDE;
 
   // Returns |results| through the given |callback| string.
-  void ReturnResults(const std::string& callback,
-                     const base::ListValue* results);
+  void ReturnResults(const std::string& callback, const base::Value* results);
 
   // Callback for the "getActiveIntervals" message.
+  // |args| contains a start and an end time.
   void HandleGetActiveIntervals(const base::ListValue* args);
 
   // Callback for the "getAllEventTypes" message.
+  // |args| is unused.
   void HandleGetAllEventTypes(const base::ListValue* args);
 
   // Callback for the "getEvents" message.
+  // |args| contains an EventType id to collect and a start and end time.
   void HandleGetEvents(const base::ListValue* args);
 
+  // Callback for the "getAllMetricTypes" message.
+  // |args| is unused.
+  void HandleGetAllMetricTypes(const base::ListValue* args);
+
+  // Callback for the "getMetric" message.
+  // |args| contains a MetricType id to collect, a start and end time, and a
+  // time resolution which defines the spacing of metric samples returned.
+  void HandleGetMetric(const base::ListValue* args);
+
   DISALLOW_COPY_AND_ASSIGN(WebUIHandler);
 };
 
 }  // namespace performance_monitor
 
 #endif  // CHROME_BROWSER_UI_WEBUI_PERFORMANCE_MONITOR_WEB_UI_HANDLER_H_