Remove non-impl-side painting as an option for blink.

cc/blink/web_layer_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 "cc/blink/web_layer_impl.h"
 
 #include <utility>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 28 matching lines @@
 using blink::WebFloatPoint;
 using blink::WebVector;
 using blink::WebRect;
 using blink::WebSize;
 using blink::WebColor;
 using blink::WebFilterOperations;
 
 namespace cc_blink {
 namespace {
 
-bool g_impl_side_painting_enabled = false;
-
 base::LazyInstance<cc::LayerSettings> g_layer_settings =
     LAZY_INSTANCE_INITIALIZER;
 
 }  // namespace
 
 WebLayerImpl::WebLayerImpl() : layer_(Layer::Create(LayerSettings())) {
   web_layer_client_ = nullptr;
   layer_->SetLayerClient(this);
 }
 
 WebLayerImpl::WebLayerImpl(scoped_refptr<Layer> layer) : layer_(layer) {
   web_layer_client_ = nullptr;
   layer_->SetLayerClient(this);
 }
 
 WebLayerImpl::~WebLayerImpl() {
   layer_->ClearRenderSurface();
   if (animation_delegate_adapter_.get())
     layer_->set_layer_animation_delegate(nullptr);
   web_layer_client_ = nullptr;
 }
 
 // static
-bool WebLayerImpl::UsingPictureLayer() {
-  return g_impl_side_painting_enabled;
-}
-
-// static
-void WebLayerImpl::SetImplSidePaintingEnabled(bool enabled) {
-  g_impl_side_painting_enabled = enabled;
-}
-
-// static
 void WebLayerImpl::SetLayerSettings(const cc::LayerSettings& settings) {
   g_layer_settings.Get() = settings;
 }
 
 // static
 const cc::LayerSettings& WebLayerImpl::LayerSettings() {
   return g_layer_settings.Get();
 }
 
 int WebLayerImpl::id() const {
@@ skipping 449 matching lines @@
   if (parent)
     clip_parent = static_cast<WebLayerImpl*>(parent)->layer();
   layer_->SetClipParent(clip_parent);
 }
 
 Layer* WebLayerImpl::layer() const {
   return layer_.get();
 }
 
 }  // namespace cc_blink