content/renderer/stats_collection_controller.h

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_RENDERER_STATS_COLLECTION_CONTROLLER_H_
   6 #define CONTENT_RENDERER_STATS_COLLECTION_CONTROLLER_H_
   7
   8 #include "ipc/ipc_sender.h"
   9 #include "webkit/renderer/cpp_bound_class.h"
  10
  11 namespace content {
  12
  13 // This class is exposed in JS as window.statsCollectionController and provides
  14 // functionality to read out statistics from the browser.
  15 // Its use must be enabled specifically via the
  16 // --enable-stats-collection-bindings command line flag.
  17 class StatsCollectionController : public webkit_glue::CppBoundClass {
  18  public:
  19   StatsCollectionController();
  20
  21   void set_message_sender(IPC::Sender* sender) {
  22     sender_ = sender;
  23   }
  24
  25   // Retrieves a histogram and returns a JSON representation of it.
  26   void GetHistogram(const webkit_glue::CppArgumentList& args,
  27                     webkit_glue::CppVariant* result);
  28
  29   // Retrieves a histogram from the browser process and returns a JSON
  30   // representation of it.
  31   void GetBrowserHistogram(const webkit_glue::CppArgumentList& args,
  32                            webkit_glue::CppVariant* result);
  33
  34   // Returns JSON representation of tab timing information for the current tab.
  35   void GetTabLoadTiming(const webkit_glue::CppArgumentList& args,
  36                         webkit_glue::CppVariant* result);
  37  private:
  38   IPC::Sender* sender_;
  39 };
  40
  41 }  // namespace content
  42
  43 #endif  // CONTENT_RENDERER_STATS_COLLECTION_CONTROLLER_H_