Pass MotionEvent tilt angles to Blink on Android.

content/browser/renderer_host/input/motion_event_web.h

 // Copyright 2014 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.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_INPUT_MOTION_EVENT_WEB_H_
 #define CONTENT_BROWSER_RENDERER_HOST_INPUT_MOTION_EVENT_WEB_H_
 
+#include "content/common/content_export.h"
 #include "third_party/WebKit/public/web/WebInputEvent.h"
 #include "ui/events/gesture_detection/motion_event.h"
 
 namespace content {
 
 // Implementation of ui::MotionEvent wrapping a WebTouchEvent.
-class MotionEventWeb : public ui::MotionEvent {
+class CONTENT_EXPORT MotionEventWeb : public ui::MotionEvent {
  public:
   explicit MotionEventWeb(const blink::WebTouchEvent& event);
   ~MotionEventWeb() override;
 
   // ui::MotionEvent
   uint32 GetUniqueEventId() const override;
   Action GetAction() const override;
   int GetActionIndex() const override;
   size_t GetPointerCount() const override;
   int GetPointerId(size_t pointer_index) const override;
   float GetX(size_t pointer_index) const override;
   float GetY(size_t pointer_index) const override;
   float GetRawX(size_t pointer_index) const override;
   float GetRawY(size_t pointer_index) const override;
   float GetTouchMajor(size_t pointer_index) const override;
   float GetTouchMinor(size_t pointer_index) const override;
   float GetOrientation(size_t pointer_index) const override;
   float GetPressure(size_t pointer_index) const override;
+  float GetTilt(size_t pointer_index) const override;
   base::TimeTicks GetEventTime() const override;
   ToolType GetToolType(size_t pointer_index) const override;
   int GetButtonState() const override;
   int GetFlags() const override;
 
  private:
   blink::WebTouchEvent event_;
   Action cached_action_;
   int cached_action_index_;
   const uint32 unique_event_id_;
 
   DISALLOW_COPY_AND_ASSIGN(MotionEventWeb);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_INPUT_MOTION_EVENT_WEB_H_