Track plugin input event latency

content/renderer/render_widget.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 CONTENT_RENDERER_RENDER_WIDGET_H_
 #define CONTENT_RENDERER_RENDER_WIDGET_H_
 
 #include <deque>
 #include <map>
 
@@ skipping 147 matching lines @@
   // Called when a plugin is moved.  These events are queued up and sent with
   // the next paint or scroll message to the host.
   void SchedulePluginMove(const WebPluginGeometry& move);
 
   // Called when a plugin window has been destroyed, to make sure the currently
   // pending moves don't try to reference it.
   void CleanupWindowInPluginMoves(gfx::PluginWindowHandle window);
 
   RenderWidgetCompositor* compositor() const;
 
+  const ui::LatencyInfo* current_event_latency_info() const {
+    return current_event_latency_info_;
+  }
+
   virtual scoped_ptr<cc::OutputSurface> CreateOutputSurface(bool fallback);
 
   // Callback for use with synthetic gestures (e.g. BeginSmoothScroll).
   typedef base::Callback<void()> SyntheticGestureCompletionCallback;
 
   // Send a synthetic gesture to the browser to be queued to the synthetic
   // gesture controller.
   void QueueSyntheticGesture(
       scoped_ptr<SyntheticGestureParams> gesture_params,
       const SyntheticGestureCompletionCallback& callback);
@@ skipping 513 matching lines @@
 
   // State associated with synthetic gestures. Synthetic gestures are processed
   // in-order, so a queue is sufficient to identify the correct state for a
   // completed gesture.
   std::queue<SyntheticGestureCompletionCallback>
       pending_synthetic_gesture_callbacks_;
 
   // Specified whether the compositor will run in its own thread.
   bool is_threaded_compositing_enabled_;
 
+  const ui::LatencyInfo* current_event_latency_info_;
+
   uint32 next_output_surface_id_;
 
 #if defined(OS_ANDROID)
   // Indicates value in the focused text field is in dirty state, i.e. modified
   // by script etc., not by user input.
   bool text_field_is_dirty_;
 
   // A counter for number of outstanding messages from the renderer to the
   // browser regarding IME-type events that have not been acknowledged by the
   // browser. If this value is not 0 IME events will be dropped.
@@ skipping 16 matching lines @@
 
   ui::MenuSourceType context_menu_source_type_;
   gfx::Point touch_editing_context_menu_location_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidget);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_WIDGET_H_