Remove parts of //cc we aren't using

cc/trees/property_tree_builder.h

Index: cc/trees/property_tree_builder.h
diff --git a/cc/trees/property_tree_builder.h b/cc/trees/property_tree_builder.h
deleted file mode 100644
index 7f5f479ec1c9df43a84c92ac7889d22a285ce887..0000000000000000000000000000000000000000
--- a/cc/trees/property_tree_builder.h
+++ /dev/null
@@ -1,34 +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.
-
-#ifndef CC_TREES_PROPERTY_TREE_BUILDER_H_
-#define CC_TREES_PROPERTY_TREE_BUILDER_H_
-
-#include <vector>
-
-#include "cc/trees/layer_tree_host_common.h"
-#include "cc/trees/property_tree.h"
-
-namespace cc {
-
-class LayerTreeHost;
-
-class PropertyTreeBuilder {
- public:
-  // Building an opacity tree is optional, and can be skipped by passing
-  // in a null |opacity_tree|.
-  static void BuildPropertyTrees(Layer* root_layer,
-                                 const Layer* page_scale_layer,
-                                 float page_scale_factor,
-                                 float device_scale_factor,
-                                 const gfx::Rect& viewport,
-                                 const gfx::Transform& device_transform,
-                                 TransformTree* transform_tree,
-                                 ClipTree* clip_tree,
-                                 OpacityTree* opacity_tree);
-};
-
-}  // namespace cc
-
-#endif  // CC_TREES_PROPERTY_TREE_BUILDER_H_