revert "SourceEventType added to LatencyInfo."

content/browser/frame_host/render_widget_host_view_guest.cc

Index: content/browser/frame_host/render_widget_host_view_guest.cc
diff --git a/content/browser/frame_host/render_widget_host_view_guest.cc b/content/browser/frame_host/render_widget_host_view_guest.cc
index 0c5f97b52cc41a56b2d0937512eb303bcb043275..ee57a64c994480a57096f14fed88911cb8ea70b5 100644
--- a/content/browser/frame_host/render_widget_host_view_guest.cc
+++ b/content/browser/frame_host/render_widget_host_view_guest.cc
@@ -557,11 +557,11 @@ void RenderWidgetHostViewGuest::MaybeSendSyntheticTapGesture(
     gesture_tap_event.y = position.y + offset.y();
     gesture_tap_event.globalX = screenPosition.x;
     gesture_tap_event.globalY = screenPosition.y;
-    GetOwnerRenderWidgetHostView()->ProcessGestureEvent(
-        gesture_tap_event, ui::LatencyInfo(ui::SourceEventType::TOUCH));
+    GetOwnerRenderWidgetHostView()->ProcessGestureEvent(gesture_tap_event,
+                                                        ui::LatencyInfo());
     gesture_tap_event.type = blink::WebGestureEvent::GestureTapCancel;
-    GetOwnerRenderWidgetHostView()->ProcessGestureEvent(
-        gesture_tap_event, ui::LatencyInfo(ui::SourceEventType::TOUCH));
+    GetOwnerRenderWidgetHostView()->ProcessGestureEvent(gesture_tap_event,
+                                                        ui::LatencyInfo());
   }
 }
 
@@ -607,8 +607,7 @@ void RenderWidgetHostViewGuest::OnHandleInputEvent(
     rescaled_event.deltaY /= current_device_scale_factor();
     rescaled_event.wheelTicksX /= current_device_scale_factor();
     rescaled_event.wheelTicksY /= current_device_scale_factor();
-    ui::LatencyInfo latency_info(ui::SourceEventType::WHEEL);
-    host_->ForwardWheelEventWithLatencyInfo(rescaled_event, latency_info);
+    host_->ForwardWheelEvent(rescaled_event);
     return;
   }
 
@@ -636,9 +635,8 @@ void RenderWidgetHostViewGuest::OnHandleInputEvent(
   }
 
   if (event->type == blink::WebInputEvent::MouseWheel) {
-    ui::LatencyInfo latency_info(ui::SourceEventType::WHEEL);
-    host_->ForwardWheelEventWithLatencyInfo(
-        *static_cast<const blink::WebMouseWheelEvent*>(event), latency_info);
+    host_->ForwardWheelEvent(
+        *static_cast<const blink::WebMouseWheelEvent*>(event));
     return;
   }
 
@@ -655,9 +653,10 @@ void RenderWidgetHostViewGuest::OnHandleInputEvent(
         !embedder->GetView()->HasFocus()) {
       embedder->GetView()->Focus();
     }
-    ui::LatencyInfo latency_info(ui::SourceEventType::TOUCH);
+
     host_->ForwardTouchEventWithLatencyInfo(
-        *static_cast<const blink::WebTouchEvent*>(event), latency_info);
+        *static_cast<const blink::WebTouchEvent*>(event),
+        ui::LatencyInfo());
     return;
   }