Remove parts of //cc we aren't using

cc/layers/surface_layer.cc

Index: cc/layers/surface_layer.cc
diff --git a/cc/layers/surface_layer.cc b/cc/layers/surface_layer.cc
deleted file mode 100644
index 1a690b6eb025e21522f9b76813c8e9ee914d077f..0000000000000000000000000000000000000000
--- a/cc/layers/surface_layer.cc
+++ /dev/null
@@ -1,123 +0,0 @@
-// 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/layers/surface_layer.h"
-
-#include "cc/layers/surface_layer_impl.h"
-#include "cc/output/swap_promise.h"
-#include "cc/trees/layer_tree_host.h"
-
-namespace cc {
-
-class SatisfySwapPromise : public SwapPromise {
- public:
-  SatisfySwapPromise(SurfaceSequence sequence,
-                     const SurfaceLayer::SatisfyCallback& satisfy_callback)
-      : sequence_(sequence), satisfy_callback_(satisfy_callback) {}
-
-  ~SatisfySwapPromise() override {}
-
- private:
-  void DidSwap(CompositorFrameMetadata* metadata) override {
-    metadata->satisfies_sequences.push_back(sequence_.sequence);
-  }
-
-  void DidNotSwap(DidNotSwapReason reason) override {
-    satisfy_callback_.Run(sequence_);
-  }
-  int64 TraceId() const override { return 0; }
-
-  SurfaceSequence sequence_;
-  SurfaceLayer::SatisfyCallback satisfy_callback_;
-
-  DISALLOW_COPY_AND_ASSIGN(SatisfySwapPromise);
-};
-
-scoped_refptr<SurfaceLayer> SurfaceLayer::Create(
-    const SatisfyCallback& satisfy_callback,
-    const RequireCallback& require_callback) {
-  return make_scoped_refptr(
-      new SurfaceLayer(satisfy_callback, require_callback));
-}
-
-SurfaceLayer::SurfaceLayer(const SatisfyCallback& satisfy_callback,
-                           const RequireCallback& require_callback)
-    : Layer(),
-      surface_scale_(1.f),
-      satisfy_callback_(satisfy_callback),
-      require_callback_(require_callback) {
-}
-
-SurfaceLayer::~SurfaceLayer() {
-  DCHECK(!layer_tree_host());
-  DCHECK(destroy_sequence_.is_null());
-}
-
-void SurfaceLayer::SetSurfaceId(SurfaceId surface_id,
-                                float scale,
-                                const gfx::Size& size) {
-  SatisfyDestroySequence();
-  surface_id_ = surface_id;
-  surface_size_ = size;
-  surface_scale_ = scale;
-  CreateNewDestroySequence();
-
-  UpdateDrawsContent(HasDrawableContent());
-  SetNeedsPushProperties();
-}
-
-scoped_ptr<LayerImpl> SurfaceLayer::CreateLayerImpl(LayerTreeImpl* tree_impl) {
-  return SurfaceLayerImpl::Create(tree_impl, id());
-}
-
-bool SurfaceLayer::HasDrawableContent() const {
-  return !surface_id_.is_null() && Layer::HasDrawableContent();
-}
-
-void SurfaceLayer::SetLayerTreeHost(LayerTreeHost* host) {
-  if (layer_tree_host() == host) {
-    Layer::SetLayerTreeHost(host);
-    return;
-  }
-
-  SatisfyDestroySequence();
-  Layer::SetLayerTreeHost(host);
-  CreateNewDestroySequence();
-}
-
-void SurfaceLayer::PushPropertiesTo(LayerImpl* layer) {
-  Layer::PushPropertiesTo(layer);
-  SurfaceLayerImpl* layer_impl = static_cast<SurfaceLayerImpl*>(layer);
-
-  layer_impl->SetSurfaceId(surface_id_);
-}
-
-void SurfaceLayer::CalculateContentsScale(float ideal_contents_scale,
-                                          float* contents_scale_x,
-                                          float* contents_scale_y,
-                                          gfx::Size* content_bounds) {
-  *content_bounds = surface_size_;
-  *contents_scale_x = surface_scale_;
-  *contents_scale_y = surface_scale_;
-}
-
-void SurfaceLayer::CreateNewDestroySequence() {
-  DCHECK(destroy_sequence_.is_null());
-  if (layer_tree_host()) {
-    destroy_sequence_ = layer_tree_host()->CreateSurfaceSequence();
-    require_callback_.Run(surface_id_, destroy_sequence_);
-  }
-}
-
-void SurfaceLayer::SatisfyDestroySequence() {
-  if (!layer_tree_host())
-    return;
-  DCHECK(!destroy_sequence_.is_null());
-  scoped_ptr<SatisfySwapPromise> satisfy(
-      new SatisfySwapPromise(destroy_sequence_, satisfy_callback_));
-  layer_tree_host()->QueueSwapPromise(satisfy.Pass());
-  destroy_sequence_ = SurfaceSequence();
-}
-
-}  // namespace cc