Use IDCompositionSurface to implement DirectCompositionSurfaceWin.

services/ui/surfaces/display_output_surface.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 "services/ui/surfaces/display_output_surface.h"
 
 #include <stdint.h>
 
 #include "base/bind.h"
 #include "base/memory/ptr_util.h"
@@ skipping 36 matching lines @@
 void DisplayOutputSurface::EnsureBackbuffer() {}
 
 void DisplayOutputSurface::DiscardBackbuffer() {
   context_provider()->ContextGL()->DiscardBackbufferCHROMIUM();
 }
 
 void DisplayOutputSurface::BindFramebuffer() {
   context_provider()->ContextGL()->BindFramebuffer(GL_FRAMEBUFFER, 0);
 }
 
+void DisplayOutputSurface::SetDrawRectangle(const gfx::Rect& rect) {
+  if (set_draw_rectangle_for_frame_)
+    return;
+  DCHECK(gfx::Rect(size_).Contains(rect));
+  DCHECK(has_set_draw_rectangle_since_last_resize_ ||
+         (gfx::Rect(size_) == rect));
+  set_draw_rectangle_for_frame_ = true;
+  has_set_draw_rectangle_since_last_resize_ = true;
+  context_provider()->ContextGL()->SetDrawRectangleCHROMIUM(
+      rect.x(), rect.y(), rect.width(), rect.height());
+}
+
 void DisplayOutputSurface::Reshape(const gfx::Size& size,
                                    float device_scale_factor,
                                    const gfx::ColorSpace& color_space,
                                    bool has_alpha,
                                    bool use_stencil) {
+  size_ = size;
+  has_set_draw_rectangle_since_last_resize_ = false;
   context_provider()->ContextGL()->ResizeCHROMIUM(
       size.width(), size.height(), device_scale_factor, has_alpha);
 }
 
 void DisplayOutputSurface::SwapBuffers(cc::OutputSurfaceFrame frame) {
   DCHECK(context_provider_);
+  set_draw_rectangle_for_frame_ = false;
   if (frame.sub_buffer_rect) {
     context_provider_->ContextSupport()->PartialSwapBuffers(
         *frame.sub_buffer_rect);
   } else {
     context_provider_->ContextSupport()->Swap();
   }
 }
 
 uint32_t DisplayOutputSurface::GetFramebufferCopyTextureFormat() {
   // TODO(danakj): What attributes are used for the default framebuffer here?
@@ skipping 38 matching lines @@
 
 void DisplayOutputSurface::OnVSyncParametersUpdated(base::TimeTicks timebase,
                                                     base::TimeDelta interval) {
   // TODO(brianderson): We should not be receiving 0 intervals.
   synthetic_begin_frame_source_->OnUpdateVSyncParameters(
       timebase,
       interval.is_zero() ? cc::BeginFrameArgs::DefaultInterval() : interval);
 }
 
 }  // namespace ui