cc: Remove cc::settings, move them to LayerTreeSettings.

cc/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/layer.h"
 
 #include "cc/active_animation.h"
 #include "cc/animation_events.h"
 #include "cc/layer_animation_controller.h"
 #include "cc/layer_impl.h"
 #include "cc/layer_tree_host.h"
-#include "cc/settings.h"
 #include "third_party/skia/include/core/SkImageFilter.h"
 #include "ui/gfx/rect_conversions.h"
 #include <public/WebAnimationDelegate.h>
 #include <public/WebLayerScrollClient.h>
 #include <public/WebSize.h>
 
 using namespace std;
 using WebKit::WebTransformationMatrix;
 
 namespace cc {
@@ skipping 738 matching lines @@
 }
 
 bool Layer::addAnimation(scoped_ptr <ActiveAnimation> animation)
 {
     // WebCore currently assumes that accelerated animations will start soon
     // after the animation is added. However we cannot guarantee that if we do
     // not have a layerTreeHost that will setNeedsCommit().
     if (!m_layerTreeHost)
         return false;
 
-    if (!Settings::acceleratedAnimationEnabled())
+    if (!m_layerTreeHost->settings().acceleratedAnimationEnabled)
         return false;
 
     m_layerAnimationController->addAnimation(animation.Pass());
     if (m_layerTreeHost) {
         m_layerTreeHost->didAddAnimation();
         setNeedsCommit();
     }
     return true;
 }
 
@@ skipping 67 matching lines @@
 {
     return 0;
 }
 
 void sortLayers(std::vector<scoped_refptr<Layer> >::iterator, std::vector<scoped_refptr<Layer> >::iterator, void*)
 {
     // Currently we don't use z-order to decide what to paint, so there's no need to actually sort Layers.
 }
 
 }  // namespace cc