Log First User Interaction in Page Load Metrics

content/browser/renderer_host/render_widget_host_impl.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_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 150 matching lines @@
   bool IsLoading() const override;
   void ResizeRectChanged(const gfx::Rect& new_rect) override;
   void RestartHangMonitorTimeout() override;
   void SetIgnoreInputEvents(bool ignore_input_events) override;
   void WasResized() override;
   void AddKeyPressEventCallback(const KeyPressEventCallback& callback) override;
   void RemoveKeyPressEventCallback(
       const KeyPressEventCallback& callback) override;
   void AddMouseEventCallback(const MouseEventCallback& callback) override;
   void RemoveMouseEventCallback(const MouseEventCallback& callback) override;
+  void AddInputEventObserver(
+      RenderWidgetHost::InputEventObserver* observer) override;
+  void RemoveInputEventObserver(
+      RenderWidgetHost::InputEventObserver* observer) override;
   void GetWebScreenInfo(blink::WebScreenInfo* result) override;
   bool GetScreenColorProfile(std::vector<char>* color_profile) override;
   void HandleCompositorProto(const std::vector<uint8_t>& proto) override;
 
   // Notification that the screen info has changed.
   void NotifyScreenInfoChanged();
 
   // Forces redraw in the renderer and when the update reaches the browser
   // grabs snapshot from the compositor. Returns PNG-encoded snapshot.
   using GetSnapshotFromBrowserCallback =
@@ skipping 416 matching lines @@
   InputEventAckState FilterInputEvent(
       const blink::WebInputEvent& event,
       const ui::LatencyInfo& latency_info) override;
   void IncrementInFlightEventCount() override;
   void DecrementInFlightEventCount() override;
   void OnHasTouchEventHandlers(bool has_handlers) override;
   void DidFlush() override;
   void DidOverscroll(const DidOverscrollParams& params) override;
   void DidStopFlinging() override;
 
+  // Dispatch input events with latency information
+  void DispatchInputEventWithLatencyInfo(const blink::WebInputEvent& event,
+                                         ui::LatencyInfo* latency);
+
   // InputAckHandler
   void OnKeyboardEventAck(const NativeWebKeyboardEventWithLatencyInfo& event,
                           InputEventAckState ack_result) override;
   void OnMouseEventAck(const MouseEventWithLatencyInfo& event,
                        InputEventAckState ack_result) override;
   void OnWheelEventAck(const MouseWheelEventWithLatencyInfo& event,
                        InputEventAckState ack_result) override;
   void OnTouchEventAck(const TouchEventWithLatencyInfo& event,
                        InputEventAckState ack_result) override;
   void OnGestureEventAck(const GestureEventWithLatencyInfo& event,
@@ skipping 77 matching lines @@
   bool waiting_for_screen_rects_ack_;
   gfx::Rect last_view_screen_rect_;
   gfx::Rect last_window_screen_rect_;
 
   // Keyboard event listeners.
   std::vector<KeyPressEventCallback> key_press_event_callbacks_;
 
   // Mouse event callbacks.
   std::vector<MouseEventCallback> mouse_event_callbacks_;
 
+  // Input event callbacks.
+  base::ObserverList<RenderWidgetHost::InputEventObserver>
+      input_event_observers_;
+
   // If true, then we should repaint when restoring even if we have a
   // backingstore.  This flag is set to true if we receive a paint message
   // while is_hidden_ to true.  Even though we tell the render widget to hide
   // itself, a paint message could already be in flight at that point.
   bool needs_repainting_on_restore_;
 
   // This is true if the renderer is currently unresponsive.
   bool is_unresponsive_;
 
   // This value denotes the number of input events yet to be acknowledged
@@ skipping 95 matching lines @@
   base::TimeDelta new_content_rendering_delay_;
 
   base::WeakPtrFactory<RenderWidgetHostImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_