Change ui::Event::time_stamp from TimeDelta to TimeTicks

content/browser/android/content_view_core_impl.cc

 // Copyright 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/android/content_view_core_impl.h"
 
 #include <stddef.h>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_array.h"
@@ skipping 1023 matching lines @@
     jfloat ticks_y,
     jfloat pixels_per_tick) {
   RenderWidgetHostViewAndroid* rwhv = GetRenderWidgetHostViewAndroid();
   if (!rwhv)
     return false;
 
   if (!ticks_x && !ticks_y)
     return false;
 
   // Compute Event.Latency.OS.MOUSE_WHEEL histogram.
-  base::TimeDelta current_time = ui::EventTimeForNow();
-  base::TimeDelta event_time = base::TimeDelta::FromMilliseconds(time_ms);
+  base::TimeTicks current_time = ui::EventTimeForNow();
+  base::TimeTicks event_time = base::TimeTicks() +
+      base::TimeDelta::FromMilliseconds(time_ms);
   base::TimeDelta delta = current_time - event_time;
   UMA_HISTOGRAM_CUSTOM_COUNTS("Event.Latency.OS.MOUSE_WHEEL",
       delta.InMicroseconds(), 1, 1000000, 50);
 
   blink::WebMouseWheelEvent event = WebMouseWheelEventBuilder::Build(
       ticks_x, ticks_y, pixels_per_tick / dpi_scale(), time_ms / 1000.0,
       x / dpi_scale(), y / dpi_scale());
 
   rwhv->SendMouseWheelEvent(event);
   return true;
@@ skipping 525 matching lines @@
     return ScopedJavaLocalRef<jobject>();
 
   return view->GetJavaObject();
 }
 
 bool RegisterContentViewCore(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace content