Implement the framework for a paint property hierarchy

third_party/WebKit/Source/platform/graphics/paint/DisplayItemList.h

 // 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.
 
 #ifndef DisplayItemList_h
 #define DisplayItemList_h
 
 #include "platform/PlatformExport.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/geometry/IntRect.h"
@@ skipping 60 matching lines @@
     void invalidateAll();
 
     // Record when paint offsets change during paint.
     void invalidatePaintOffset(const DisplayItemClientWrapper&);
 #if ENABLE(ASSERT)
     bool paintOffsetWasInvalidated(DisplayItemClient) const;
 #endif
 
     // These methods are called during painting.
 
-    // Provide a new set of paint properties to apply to recorded display items,
-    // for Slimming Paint v2.
-    void updateCurrentPaintProperties(const PaintProperties&);
+    // Provide a new set of paint chunk properties to apply to recorded display
+    // items, for Slimming Paint v2.
+    // TODO(pdr): This should be moved to PaintArtifact.
+    void updateCurrentPaintChunkProperties(const PaintChunkProperties&);
 
     template <typename DisplayItemClass, typename... Args>
     void createAndAppend(Args&&... args)
     {
         static_assert(WTF::IsSubclass<DisplayItemClass, DisplayItem>::value,
             "Can only createAndAppend subclasses of DisplayItem.");
         static_assert(sizeof(DisplayItemClass) <= kMaximumDisplayItemSize,
             "DisplayItem subclass is larger than kMaximumDisplayItemSize.");
 
         if (displayItemConstructionIsDisabled())
@@ skipping 199 matching lines @@
     // the duplicated ids are from.
     DisplayItemIndicesByClientMap m_newDisplayItemIndicesByClient;
 #endif
 
     OwnPtr<Vector<String>> m_trackedPaintInvalidationObjects;
 };
 
 } // namespace blink
 
 #endif // DisplayItemList_h