Update from https://crrev.com/306655

cc/resources/transform_display_item.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/resources/transform_display_item.h"
+
+#include "third_party/skia/include/core/SkCanvas.h"
+
+namespace cc {
+
+TransformDisplayItem::TransformDisplayItem(const gfx::Transform& transform)
+    : transform_(transform) {
+}
+
+TransformDisplayItem::~TransformDisplayItem() {
+}
+
+void TransformDisplayItem::Raster(SkCanvas* canvas,
+                                  SkDrawPictureCallback* callback) const {
+  canvas->save();
+  if (!transform_.IsIdentity())
+    canvas->concat(transform_.matrix());
+}
+
+bool TransformDisplayItem::IsSuitableForGpuRasterization() const {
+  return true;
+}
+
+int TransformDisplayItem::ApproximateOpCount() const {
+  return 1;
+}
+
+size_t TransformDisplayItem::PictureMemoryUsage() const {
+  return sizeof(gfx::Transform);
+}
+
+EndTransformDisplayItem::EndTransformDisplayItem() {
+}
+
+EndTransformDisplayItem::~EndTransformDisplayItem() {
+}
+
+void EndTransformDisplayItem::Raster(SkCanvas* canvas,
+                                     SkDrawPictureCallback* callback) const {
+  canvas->restore();
+}
+
+bool EndTransformDisplayItem::IsSuitableForGpuRasterization() const {
+  return true;
+}
+
+int EndTransformDisplayItem::ApproximateOpCount() const {
+  return 0;
+}
+
+size_t EndTransformDisplayItem::PictureMemoryUsage() const {
+  return 0;
+}
+
+}  // namespace cc