Added experimental Touch.tilt, Touch.tiltDirection support for Android

ui/events/ozone/events_ozone.cc

 // Copyright (c) 2013 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/ozone/events_ozone.h"
 
 #include "ui/events/event.h"
 #include "ui/events/event_constants.h"
 #include "ui/events/event_utils.h"
 
@@ skipping 102 matching lines @@
   return event->radius_y();
 }
 
 float GetTouchAngle(const base::NativeEvent& native_event) {
   const ui::TouchEvent* event =
       static_cast<const ui::TouchEvent*>(native_event);
   DCHECK(event->IsTouchEvent());
   return event->rotation_angle();
 }
 
+float GetTouchTilt(const base::NativeEvent& native_event) {
+  NOTIMPLEMENTED();
+  return 0.0f;
+}
+
 float GetTouchForce(const base::NativeEvent& native_event) {
   const ui::TouchEvent* event =
       static_cast<const ui::TouchEvent*>(native_event);
   DCHECK(event->IsTouchEvent());
   return event->force();
 }
 
 bool GetScrollOffsets(const base::NativeEvent& native_event,
                       float* x_offset,
                       float* y_offset,
@@ skipping 59 matching lines @@
     callback.Run(&touch_event);
   } else if (native_ui_event->IsScrollEvent()) {
     ui::ScrollEvent scroll_event(native_event);
     callback.Run(&scroll_event);
   } else {
     NOTREACHED();
   }
 }
 
 }  // namespace ui