gpu benchmarking swipe for touchpad

content/browser/renderer_host/input/synthetic_gesture_target_aura.cc

Index: content/browser/renderer_host/input/synthetic_gesture_target_aura.cc
diff --git a/content/browser/renderer_host/input/synthetic_gesture_target_aura.cc b/content/browser/renderer_host/input/synthetic_gesture_target_aura.cc
index 38ff88081c216fc6179b9e6941292ca63f755ae7..0f1875ff10097dc0557f915a21af31ba43d6fe0d 100644
--- a/content/browser/renderer_host/input/synthetic_gesture_target_aura.cc
+++ b/content/browser/renderer_host/input/synthetic_gesture_target_aura.cc
@@ -17,6 +17,7 @@
 
 using blink::WebTouchEvent;
 using blink::WebMouseWheelEvent;
+using blink::WebGestureEvent;
 
 namespace content {
 
@@ -65,9 +66,11 @@ void SyntheticGestureTargetAura::DispatchWebTouchEventToPlatform(
 void SyntheticGestureTargetAura::DispatchWebMouseWheelEventToPlatform(
       const blink::WebMouseWheelEvent& web_wheel,
       const ui::LatencyInfo&) {
+  base::TimeTicks timestamp =
+      ui::EventTimeStampFromSeconds(web_wheel.timeStampSeconds());
   ui::MouseWheelEvent wheel_event(
       gfx::Vector2d(web_wheel.deltaX, web_wheel.deltaY), gfx::Point(),
-      gfx::Point(), ui::EventTimeForNow(), ui::EF_NONE, ui::EF_NONE);
+      gfx::Point(), timestamp, ui::EF_NONE, ui::EF_NONE);
   gfx::PointF location(web_wheel.x * device_scale_factor_,
                        web_wheel.y * device_scale_factor_);
   wheel_event.set_location_f(location);
@@ -162,6 +165,36 @@ void SyntheticGestureTargetAura::DispatchWebMouseEventToPlatform(
     return;
 }
 
+// This function generates a synthetic ui event which aligns with ChromeOS
+// event stream for handling touchpad fling.
+void SyntheticGestureTargetAura::DispatchTouchpadGestureFlingStartToPlatform(
+    const blink::WebGestureEvent& web_gesture,
+    const ui::LatencyInfo& latency_info) {
+  DCHECK_EQ(web_gesture.type(), blink::WebInputEvent::GestureFlingStart);
+
+  float velocity_x = web_gesture.data.flingStart.velocityX;
+  float velocity_y = web_gesture.data.flingStart.velocityY;
+  DCHECK(velocity_x || velocity_y);
+
+  base::TimeTicks timestamp =
+      ui::EventTimeStampFromSeconds(web_gesture.timeStampSeconds());
+  ui::ScrollEvent fling_event(ui::ET_SCROLL_FLING_START, gfx::Point(),
+                              timestamp, ui::EF_NONE, velocity_x, velocity_y,
+                              velocity_x, velocity_y,
+                              2);  // finger_count
+  gfx::PointF location(web_gesture.x * device_scale_factor_,
+                       web_gesture.y * device_scale_factor_);
+  fling_event.set_location_f(location);
+  fling_event.set_root_location_f(location);
+
+  aura::Window* window = GetWindow();
+  fling_event.ConvertLocationToTarget(window, window->GetRootWindow());
+  ui::EventDispatchDetails details =
+      window->GetHost()->event_processor()->OnEventFromSource(&fling_event);
+  if (details.dispatcher_destroyed)
+    return;
+}
+
 SyntheticGestureParams::GestureSourceType
 SyntheticGestureTargetAura::GetDefaultSyntheticGestureSourceType() const {
   return SyntheticGestureParams::TOUCH_INPUT;