Use mojo for cursor control in ozone drm

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

Index: ui/ozone/platform/drm/host/drm_cursor.cc
diff --git a/ui/ozone/platform/drm/host/drm_cursor.cc b/ui/ozone/platform/drm/host/drm_cursor.cc
index 0dc9ae53704110228670e2087b8f89db860da8bc..ab82f53089f150626f8fcd25f502a193c62190f9 100644
--- a/ui/ozone/platform/drm/host/drm_cursor.cc
+++ b/ui/ozone/platform/drm/host/drm_cursor.cc
@@ -27,6 +27,8 @@ class NullProxy : public DrmCursorProxy {
                  const gfx::Point& point,
                  int frame_delay_ms) override {}
   void Move(gfx::AcceleratedWidget window, const gfx::Point& point) override {}
+  void MoveEvdev(gfx::AcceleratedWidget window,
+                 const gfx::Point& point) override {}
   void InitializeOnEvdev() override {}
 
  private:
@@ -163,7 +165,7 @@ void DrmCursor::MoveCursorTo(gfx::AcceleratedWidget window,
   if (window != old_window)
     SendCursorShowLocked();
   else
-    SendCursorMoveLocked();
+    SendCursorMoveLocked(UI);
 }
 
 void DrmCursor::MoveCursorTo(const gfx::PointF& screen_location) {
@@ -176,7 +178,7 @@ void DrmCursor::MoveCursorTo(const gfx::PointF& screen_location) {
   SetCursorLocationLocked(screen_location -
                           display_bounds_in_screen_.OffsetFromOrigin());
 
-  SendCursorMoveLocked();
+  SendCursorMoveLocked(UI);

[spang, 2016/07/22 19:52:54]

Assuming MoveCursorTo() is called from UI is broken, the exception is for tablet
devices.

 }
 
 void DrmCursor::MoveCursor(const gfx::Vector2dF& delta) {
@@ -196,7 +198,7 @@ void DrmCursor::MoveCursor(const gfx::Vector2dF& delta) {
 #else
   SetCursorLocationLocked(location_ + delta);
 #endif
-  SendCursorMoveLocked();
+  SendCursorMoveLocked(EVDEV);
 }
 
 bool DrmCursor::IsCursorVisible() {
@@ -242,10 +244,10 @@ void DrmCursor::SendCursorHideLocked() {
   CursorSetLockTested(window_, std::vector<SkBitmap>(), gfx::Point(), 0);
 }
 
-void DrmCursor::SendCursorMoveLocked() {
+void DrmCursor::SendCursorMoveLocked(ThreadType thread_type) {
   if (!bitmap_)
     return;
-  MoveLockTested(window_, GetBitmapLocationLocked());
+  MoveLockTested(thread_type, window_, GetBitmapLocationLocked());
 }
 
 // Lock-testing helpers.
@@ -257,10 +259,14 @@ void DrmCursor::CursorSetLockTested(gfx::AcceleratedWidget window,
   proxy_->CursorSet(window, bitmaps, point, frame_delay_ms);
 }
 
-void DrmCursor::MoveLockTested(gfx::AcceleratedWidget window,
+void DrmCursor::MoveLockTested(ThreadType thread_type,
+                               gfx::AcceleratedWidget window,
                                const gfx::Point& point) {
   lock_.AssertAcquired();
-  proxy_->Move(window, point);
+  if (thread_type == EVDEV)
+    proxy_->MoveEvdev(window, point);
+  else
+    proxy_->Move(window, point);
 }