Roll Chrome into Mojo.

cc/resources/float_clip_display_item.cc

+// Copyright 2015 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/float_clip_display_item.h"
+
+#include "third_party/skia/include/core/SkCanvas.h"
+#include "ui/gfx/skia_util.h"
+
+namespace cc {
+
+FloatClipDisplayItem::FloatClipDisplayItem(gfx::RectF clip_rect)
+    : clip_rect_(clip_rect) {
+}
+
+FloatClipDisplayItem::~FloatClipDisplayItem() {
+}
+
+void FloatClipDisplayItem::Raster(SkCanvas* canvas,
+                                  SkDrawPictureCallback* callback) const {
+  canvas->save();
+  canvas->clipRect(gfx::RectFToSkRect(clip_rect_));
+}
+
+bool FloatClipDisplayItem::IsSuitableForGpuRasterization() const {
+  return true;
+}
+
+int FloatClipDisplayItem::ApproximateOpCount() const {
+  return 1;
+}
+
+size_t FloatClipDisplayItem::PictureMemoryUsage() const {
+  return sizeof(gfx::RectF);
+}
+
+EndFloatClipDisplayItem::EndFloatClipDisplayItem() {
+}
+
+EndFloatClipDisplayItem::~EndFloatClipDisplayItem() {
+}
+
+void EndFloatClipDisplayItem::Raster(SkCanvas* canvas,
+                                     SkDrawPictureCallback* callback) const {
+  canvas->restore();
+}
+
+bool EndFloatClipDisplayItem::IsSuitableForGpuRasterization() const {
+  return true;
+}
+
+int EndFloatClipDisplayItem::ApproximateOpCount() const {
+  return 0;
+}
+
+size_t EndFloatClipDisplayItem::PictureMemoryUsage() const {
+  return 0;
+}
+
+}  // namespace cc