Use mojo for cursor control in ozone drm

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

Index: ui/ozone/platform/drm/host/drm_cursor.h
diff --git a/ui/ozone/platform/drm/host/drm_cursor.h b/ui/ozone/platform/drm/host/drm_cursor.h
index f8a6bfd5aecc52c2119c49b4d41ce0a17579e1b7..ea2794ad21a0974ff6b05eb947d267f78b4c45d5 100644
--- a/ui/ozone/platform/drm/host/drm_cursor.h
+++ b/ui/ozone/platform/drm/host/drm_cursor.h
@@ -30,9 +30,12 @@ class DrmCursorProxy {
                          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;
 };
@@ -73,17 +76,21 @@ class DrmCursor : public CursorDelegateEvdev {
   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_;