re-land the "SourceEventType added to LatencyInfo."

content/browser/renderer_host/render_widget_host_view_android.cc

 // 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.
 
 #include "content/browser/renderer_host/render_widget_host_view_android.h"
 
 #include <android/bitmap.h>
 
 #include <utility>
 
@@ skipping 66 matching lines @@
 #include "third_party/khronos/GLES2/gl2ext.h"
 #include "third_party/skia/include/core/SkCanvas.h"
 #include "ui/android/delegated_frame_host_android.h"
 #include "ui/android/window_android.h"
 #include "ui/android/window_android_compositor.h"
 #include "ui/base/layout.h"
 #include "ui/display/display.h"
 #include "ui/display/screen.h"
 #include "ui/events/blink/blink_event_util.h"
 #include "ui/events/blink/did_overscroll_params.h"
+#include "ui/events/blink/web_input_event_traits.h"
 #include "ui/events/gesture_detection/gesture_provider_config_helper.h"
 #include "ui/events/gesture_detection/motion_event.h"
 #include "ui/gfx/android/device_display_info.h"
 #include "ui/gfx/android/java_bitmap.h"
 #include "ui/gfx/android/view_configuration.h"
 #include "ui/gfx/geometry/dip_util.h"
 #include "ui/gfx/geometry/size_conversions.h"
 #include "ui/touch_selection/touch_selection_controller.h"
 
 namespace content {
@@ skipping 739 matching lines @@
     return true;
   }
 
   ui::FilteredGestureProvider::TouchHandlingResult result =
       gesture_provider_.OnTouchEvent(event);
   if (!result.succeeded)
     return false;
 
   blink::WebTouchEvent web_event = ui::CreateWebTouchEventFromMotionEvent(
       event, result.moved_beyond_slop_region);
-  ui::LatencyInfo latency_info;
+  ui::LatencyInfo latency_info(ui::SourceEventType::TOUCH);
   latency_info.AddLatencyNumber(ui::INPUT_EVENT_LATENCY_UI_COMPONENT, 0, 0);
   host_->ForwardTouchEventWithLatencyInfo(web_event, latency_info);
 
   // Send a proactive BeginFrame for this vsync to reduce scroll latency for
   // scroll-inducing touch events. Note that Android's Choreographer ensures
   // that BeginFrame requests made during ACTION_MOVE dispatch will be honored
   // in the same vsync phase.
   if (observing_root_window_ && result.moved_beyond_slop_region)
     RequestVSyncUpdate(BEGIN_FRAME);
 
@@ skipping 12 matching lines @@
   if (!current_down_event) {
     // A hard reset ensures prevention of any timer-based events that might fire
     // after a touch sequence has ended.
     gesture_provider_.ResetDetection();
     return;
   }
 
   std::unique_ptr<ui::MotionEvent> cancel_event = current_down_event->Cancel();
   if (gesture_provider_.OnTouchEvent(*cancel_event).succeeded) {
     bool causes_scrolling = false;
+    ui::LatencyInfo latency_info(ui::SourceEventType::TOUCH);
+    latency_info.AddLatencyNumber(ui::INPUT_EVENT_LATENCY_UI_COMPONENT, 0, 0);
     host_->ForwardTouchEventWithLatencyInfo(
         ui::CreateWebTouchEventFromMotionEvent(*cancel_event, causes_scrolling),
-        ui::LatencyInfo());
+        latency_info);
   }
 }
 
 void RenderWidgetHostViewAndroid::OnDidNavigateMainFrameToNewPage() {
   ResetGestureDetection();
 }
 
 void RenderWidgetHostViewAndroid::SetDoubleTapSupportEnabled(bool enabled) {
   gesture_provider_.SetDoubleTapSupportForPlatformEnabled(enabled);
 }
@@ skipping 758 matching lines @@
 
 void RenderWidgetHostViewAndroid::SendMouseEvent(
     const blink::WebMouseEvent& event) {
   if (host_)
     host_->ForwardMouseEvent(event);
 }
 
 void RenderWidgetHostViewAndroid::SendMouseWheelEvent(
     const blink::WebMouseWheelEvent& event) {
   if (host_) {
-    ui::LatencyInfo latency_info;
+    ui::LatencyInfo latency_info(ui::SourceEventType::WHEEL);
     latency_info.AddLatencyNumber(ui::INPUT_EVENT_LATENCY_UI_COMPONENT, 0, 0);
     host_->ForwardWheelEventWithLatencyInfo(event, latency_info);
   }
 }
 
 void RenderWidgetHostViewAndroid::SendGestureEvent(
     const blink::WebGestureEvent& event) {
   // Sending a gesture that may trigger overscroll should resume the effect.
   if (overscroll_controller_)
     overscroll_controller_->Enable();
 
-  if (host_)
-    host_->ForwardGestureEventWithLatencyInfo(event, ui::LatencyInfo());
+  if (host_) {
+    ui::LatencyInfo latency_info =
+        ui::WebInputEventTraits::CreateLatencyInfoForWebGestureEvent(event);
+    host_->ForwardGestureEventWithLatencyInfo(event, latency_info);
+  }
 }
 
 void RenderWidgetHostViewAndroid::MoveCaret(const gfx::Point& point) {
   if (host_)
     host_->MoveCaret(point);
 }
 
 void RenderWidgetHostViewAndroid::DismissTextHandles() {
   if (selection_controller_)
     selection_controller_->HideAndDisallowShowingAutomatically();
@@ skipping 292 matching lines @@
     case ui::MotionEvent::ACTION_UP:
     case ui::MotionEvent::ACTION_POINTER_UP:
       UMA_HISTOGRAM_CUSTOM_COUNTS("Event.Latency.OS.TOUCH_RELEASED",
                                   delta.InMicroseconds(), 1, 1000000, 50);
     default:
       return;
   }
 }
 
 }  // namespace content