1 files changed, 55 insertions, 0 deletions
diff --git a/chromium/cc/layers/quad_sink.cc b/chromium/cc/layers/quad_sink.cc
new file mode 100644
index 00000000000..23758afc669
--- /dev/null
+++ b/chromium/cc/layers/quad_sink.cc
@@ -0,0 +1,55 @@
+// 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/quad_sink.h"
+
+#include "cc/debug/debug_colors.h"
+#include "cc/layers/append_quads_data.h"
+#include "cc/layers/layer_impl.h"
+#include "cc/quads/debug_border_draw_quad.h"
+#include "cc/quads/render_pass.h"
+#include "cc/quads/render_pass_draw_quad.h"
+#include "cc/trees/occlusion_tracker.h"
+#include "third_party/skia/include/core/SkColor.h"
+#include "ui/gfx/transform.h"
+
+namespace cc {
+
+QuadSink::QuadSink(RenderPass* render_pass,
+                   const OcclusionTracker<LayerImpl>* occlusion_tracker)
+    : render_pass_(render_pass),
+      current_shared_quad_state_(NULL),
+      occlusion_tracker_(occlusion_tracker) {
+}
+
+SharedQuadState* QuadSink::CreateSharedQuadState() {
+  current_shared_quad_state_ = render_pass_->CreateAndAppendSharedQuadState();
+  return current_shared_quad_state_;
+}
+
+gfx::Rect QuadSink::UnoccludedContentRect(
+    const gfx::Rect& content_rect,
+    const gfx::Transform& draw_transform) {
+  return occlusion_tracker_->UnoccludedContentRect(content_rect,
+                                                   draw_transform);
+}
+
+gfx::Rect QuadSink::UnoccludedContributingSurfaceContentRect(
+    const gfx::Rect& content_rect,
+    const gfx::Transform& draw_transform) {
+  return occlusion_tracker_->UnoccludedContributingSurfaceContentRect(
+      content_rect, draw_transform);
+}
+
+void QuadSink::Append(scoped_ptr<DrawQuad> draw_quad) {
+  DCHECK(draw_quad->shared_quad_state == current_shared_quad_state_);
+  DCHECK(!render_pass_->shared_quad_state_list.empty());
+  DCHECK(render_pass_->shared_quad_state_list.back() ==
+         current_shared_quad_state_);
+  DCHECK(!draw_quad->rect.IsEmpty());
+  DCHECK(!draw_quad->visible_rect.IsEmpty());
+  render_pass_->quad_list.push_back(draw_quad.Pass());
+}
+
+}  // namespace cc