cc : Snap texture layers to pixel boundary

cc/layers/layer.cc

 // Copyright 2010 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 "cc/layers/layer.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 1095 matching lines @@
 static void PostCopyCallbackToMainThread(
     scoped_refptr<base::SingleThreadTaskRunner> main_thread_task_runner,
     std::unique_ptr<CopyOutputRequest> request,
     std::unique_ptr<CopyOutputResult> result) {
   main_thread_task_runner->PostTask(FROM_HERE,
                                     base::Bind(&RunCopyCallbackOnMainThread,
                                                base::Passed(&request),
                                                base::Passed(&result)));
 }
 
+bool Layer::IsSnapped() {
+  return scrollable();
+}
+
 void Layer::PushPropertiesTo(LayerImpl* layer) {
   TRACE_EVENT0("cc", "Layer::PushPropertiesTo");
   DCHECK(layer_tree_host_);
 
   // If we did not SavePaintProperties() for the layer this frame, then push the
   // real property values, not the paint property values.
   bool use_paint_properties = paint_properties_.source_frame_number ==
                               layer_tree_host_->SourceFrameNumber();
 
   layer->SetBackgroundColor(inputs_.background_color);
@@ skipping 759 matching lines @@
 
 LayerTree* Layer::GetLayerTree() const {
   return layer_tree_;
 }
 
 void Layer::SetLayerIdForTesting(int id) {
   inputs_.layer_id = id;
 }
 
 }  // namespace cc