Use mojo for cursor control in ozone drm

ui/ozone/platform/drm/host/drm_cursor.h

 // Copyright 2015 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 UI_OZONE_PLATFORM_DRM_HOST_DRM_CURSOR_H_
 #define UI_OZONE_PLATFORM_DRM_HOST_DRM_CURSOR_H_
 
 #include <memory>
 #include <vector>
 
@@ skipping 12 matching lines @@
 // processes. The proxy implementation must satisfy DrmCursorProxy.
 class DrmCursorProxy {
  public:
   virtual ~DrmCursorProxy() {}
 
   // Sets the cursor |bitmaps| on |window| at |point| with |frame_delay_ms|.
   virtual void CursorSet(gfx::AcceleratedWidget window,
                          const std::vector<SkBitmap>& bitmaps,
                          const gfx::Point& point,
                          int frame_delay_ms) = 0;
-  // Moves the cursor in |window| to |point|
+  // Moves the cursor in |window| to |point|, callable from the ui thread.
   virtual void Move(gfx::AcceleratedWidget window, const gfx::Point& point) = 0;
 
+  // Moves the cursor in |window| to |point|, callable from the EvdevThread.
+  virtual void MoveEvdev(gfx::AcceleratedWidget window,
+                         const gfx::Point& point) = 0;
   // Initialize EvdevThread-specific state.
   virtual void InitializeOnEvdev() = 0;
 };
 
 // DrmCursor manages all cursor state and semantics.
 class DrmCursor : public CursorDelegateEvdev {
  public:
   explicit DrmCursor(DrmWindowHostManager* window_manager);
   ~DrmCursor() override;
 
@@ skipping 20 matching lines @@
   void MoveCursorTo(gfx::AcceleratedWidget window,
                     const gfx::PointF& location) override;
   void MoveCursorTo(const gfx::PointF& screen_location) override;
   void MoveCursor(const gfx::Vector2dF& delta) override;
   bool IsCursorVisible() override;
   gfx::PointF GetLocation() override;
   gfx::Rect GetCursorConfinedBounds() override;
   void InitializeOnEvdev() override;
 
  private:
+  enum ThreadType { UI, EVDEV };
+
   void SetCursorLocationLocked(const gfx::PointF& location);
   void SendCursorShowLocked();
   void SendCursorHideLocked();
-  void SendCursorMoveLocked();
+  void SendCursorMoveLocked(ThreadType tt);
 
   // Lock-testing helpers.
   void CursorSetLockTested(gfx::AcceleratedWidget window,
                            const std::vector<SkBitmap>& bitmaps,
                            const gfx::Point& point,
                            int frame_delay_ms);
-  void MoveLockTested(gfx::AcceleratedWidget window, const gfx::Point& point);
+  void MoveLockTested(ThreadType thread_type,
+                      gfx::AcceleratedWidget window,
+                      const gfx::Point& point);
 
   // The mutex synchronizing this object.
   base::Lock lock_;
 
   // Enforce our threading constraints.
   base::ThreadChecker thread_checker_;
   base::ThreadChecker evdev_thread_checker_;
 
   // The location of the bitmap (the cursor location is the hotspot location).
   gfx::Point GetBitmapLocationLocked();
@@ skipping 16 matching lines @@
   DrmWindowHostManager* window_manager_;  // Not owned.
 
   std::unique_ptr<DrmCursorProxy> proxy_;
 
   DISALLOW_COPY_AND_ASSIGN(DrmCursor);
 };
 
 }  // namespace ui
 
 #endif  // UI_OZONE_PLATFORM_DRM_HOST_DRM_CURSOR_H_