Separate TransferableResource into own header

cc/transferable_resource.cc

+// Copyright 2012 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/transferable_resource.h"
+
+namespace cc {
+
+TransferableResource::TransferableResource()
+    : id(0),
+      format(0) {
+}
+
+TransferableResource::~TransferableResource() {
+}
+
+TransferableResourceList::TransferableResourceList()
+    : sync_point(0) {
+}
+
+TransferableResourceList::~TransferableResourceList() {
+}
+
+}  // namespace cc