Adding Event.Latency.Browser.WheelUI, Passing latency_info to ProcessMouse/MouseWheelEvent functions

ui/events/event_unittest.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 "ui/events/event.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
@@ skipping 868 matching lines @@
     ui::PointerEvent* clone_as_ptr = clone->AsPointerEvent();
 
     EXPECT_EQ(ptr_event.type(), clone_as_ptr->type());
     EXPECT_EQ(ptr_event.pointer_id(), clone_as_ptr->pointer_id());
     EXPECT_EQ(ptr_event.pointer_details(), clone_as_ptr->pointer_details());
     EXPECT_EQ(ptr_event.location(), clone_as_ptr->location());
     EXPECT_EQ(ptr_event.root_location(), clone_as_ptr->root_location());
   }
 }
 
+TEST(EventTest, MouseEventLatencyUIComponentExists) {
+  const gfx::Point origin(0, 0);
+  MouseEvent mouseev(ET_MOUSE_PRESSED, origin, origin, EventTimeForNow(), 0, 0);
+  EXPECT_TRUE(mouseev.latency()->FindLatency(
+      ui::INPUT_EVENT_LATENCY_UI_COMPONENT, 0, nullptr));
+}
+
+TEST(EventTest, MouseWheelEventLatencyUIComponentExists) {
+  const gfx::Point origin(0, 0);
+  MouseWheelEvent mouseWheelev(gfx::Vector2d(), origin, origin,
+                               EventTimeForNow(), 0, 0);
+  EXPECT_TRUE(mouseWheelev.latency()->FindLatency(
+      ui::INPUT_EVENT_LATENCY_UI_COMPONENT, 0, nullptr));
+}
+
 }  // namespace ui