Allow ability to handle cursor position changes on gpu IO thread

ui/ozone/platform/dri/dri_window_delegate_impl.cc

 // 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.
 
 #include "ui/ozone/platform/dri/dri_window_delegate_impl.h"
 
 #include "base/debug/trace_event.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "third_party/skia/include/core/SkDevice.h"
 #include "third_party/skia/include/core/SkSurface.h"
@@ skipping 90 matching lines @@
   cursor_location_ = location;
   cursor_frame_ = 0;
   cursor_frame_delay_ms_ = frame_delay_ms;
   cursor_timer_.Stop();
 
   if (cursor_frame_delay_ms_)
     cursor_timer_.Start(
         FROM_HERE, base::TimeDelta::FromMilliseconds(cursor_frame_delay_ms_),
         this, &DriWindowDelegateImpl::OnCursorAnimationTimeout);
 
-  ResetCursor();
+  ResetCursor(false);
 }
 
 void DriWindowDelegateImpl::MoveCursor(const gfx::Point& location) {
   cursor_location_ = location;
 
   if (controller_)
     controller_->MoveCursor(location);
 }
 
-void DriWindowDelegateImpl::ResetCursor() {
+void DriWindowDelegateImpl::ResetCursor(bool bitmap_only) {
   if (cursor_bitmaps_.size()) {
     // Draw new cursor into backbuffer.
     UpdateCursorImage(cursor_buffers_[cursor_frontbuffer_ ^ 1].get(),
                       cursor_bitmaps_[cursor_frame_]);
 
     // Reset location & buffer.
     if (controller_) {
-      controller_->MoveCursor(cursor_location_);
+      if (!bitmap_only)
+        controller_->MoveCursor(cursor_location_);
       controller_->SetCursor(cursor_buffers_[cursor_frontbuffer_ ^ 1]);
       cursor_frontbuffer_ ^= 1;
     }
   } else {
     // No cursor set.
     if (controller_)
       controller_->UnsetCursor();
   }
 }
 
 void DriWindowDelegateImpl::OnCursorAnimationTimeout() {
   cursor_frame_++;
   cursor_frame_ %= cursor_bitmaps_.size();
 
-  ResetCursor();
+  ResetCursor(true);
 }
 
 }  // namespace ui