1 files changed, 78 insertions, 0 deletions
diff --git a/chromium/third_party/blink/renderer/platform/graphics/compositing/paint_chunks_to_cc_layer.h b/chromium/third_party/blink/renderer/platform/graphics/compositing/paint_chunks_to_cc_layer.h
new file mode 100644
index 00000000000..654977d86de
--- /dev/null
+++ b/chromium/third_party/blink/renderer/platform/graphics/compositing/paint_chunks_to_cc_layer.h
@@ -0,0 +1,78 @@
+// Copyright 2017 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 THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_COMPOSITING_PAINT_CHUNKS_TO_CC_LAYER_H_
+#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_COMPOSITING_PAINT_CHUNKS_TO_CC_LAYER_H_
+
+#include "base/memory/scoped_refptr.h"
+#include "cc/paint/display_item_list.h"
+#include "third_party/blink/renderer/platform/geometry/int_rect.h"
+#include "third_party/blink/renderer/platform/platform_export.h"
+#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
+#include "third_party/blink/renderer/platform/wtf/vector.h"
+
+namespace cc {
+class DisplayItemList;
+}  // namespace cc
+
+namespace gfx {
+class Vector2dF;
+}  // namespace gfx
+
+namespace blink {
+
+class DisplayItemList;
+class PaintChunkSubset;
+class FloatSize;
+class PropertyTreeState;
+class RasterInvalidationTracking;
+
+struct RasterUnderInvalidationCheckingParams {
+  RasterUnderInvalidationCheckingParams(RasterInvalidationTracking& tracking,
+                                        const IntRect& interest_rect,
+                                        const String& debug_name)
+      : tracking(tracking),
+        interest_rect(interest_rect),
+        debug_name(debug_name) {}
+
+  RasterInvalidationTracking& tracking;
+  IntRect interest_rect;
+  String debug_name;
+};
+
+class PLATFORM_EXPORT PaintChunksToCcLayer {
+ public:
+  // Converts a list of Blink paint chunks and display items into cc display
+  // items, inserting appropriate begin/end items with respect to property
+  // tree state. The converted items are appended into a unfinalized cc display
+  // item list.
+  // |layer_state| is the target property tree state of the output. This method
+  // generates begin/end items for the relative state differences between the
+  // layer state and the chunk state.
+  // |layer_offset| is an extra translation on top of layer_state.Transform(),
+  // in other word, point (x, y) in the output list maps to
+  // layer_state.Transform() * (layer_offset + (x, y)) on the screen. It is
+  // equivalent to say that |layer_offset| is the layer origin in the space
+  // of layer_state.Transform().
+  static void ConvertInto(const PaintChunkSubset&,
+                          const PropertyTreeState& layer_state,
+                          const gfx::Vector2dF& layer_offset,
+                          const FloatSize& visual_rect_subpixel_offset,
+                          const DisplayItemList&,
+                          cc::DisplayItemList&);
+
+  // Similar to ConvertInto(), but returns a finalized new list instead of
+  // appending converted items to an existing list.
+  static scoped_refptr<cc::DisplayItemList> Convert(
+      const PaintChunkSubset&,
+      const PropertyTreeState& layer_state,
+      const gfx::Vector2dF& layer_offset,
+      const DisplayItemList&,
+      cc::DisplayItemList::UsageHint,
+      RasterUnderInvalidationCheckingParams* = nullptr);
+};
+
+}  // namespace blink
+
+#endif  // PaintArtifactCompositor_h