Further plumb visual rect into cc:DisplayItemList.

ui/compositor/compositing_recorder.cc

 // 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.
 
 #include "ui/compositor/compositing_recorder.h"
 
 #include "cc/playback/compositing_display_item.h"
 #include "cc/playback/display_item_list.h"
 #include "ui/compositor/paint_context.h"
 #include "ui/gfx/canvas.h"
+#include "ui/gfx/geometry/rect.h"
 
 namespace ui {
 
 CompositingRecorder::CompositingRecorder(const PaintContext& context,
+                                         const gfx::Size& layer_size,
                                          uint8_t alpha)
-    : context_(context), saved_(alpha < 255) {
+    : context_(context),
+      layer_bounds_(context.ToLayerSpaceBounds(layer_size)),
+      saved_(alpha < 255) {
   if (!saved_)
     return;
 
-  auto* item =
-      context_.list_->CreateAndAppendItem<cc::CompositingDisplayItem>();
+  auto* item = context_.list_->CreateAndAppendItem<cc::CompositingDisplayItem>(
+      layer_bounds_);
   item->SetNew(alpha, SkXfermode::kSrcOver_Mode, nullptr /* no bounds */,
                skia::RefPtr<SkColorFilter>());
 }
 
 CompositingRecorder::~CompositingRecorder() {
   if (!saved_)
     return;
 
-  context_.list_->CreateAndAppendItem<cc::EndCompositingDisplayItem>();
+  context_.list_->CreateAndAppendItem<cc::EndCompositingDisplayItem>(
+      layer_bounds_);
 }
 
 }  // namespace ui