Implement the framework for a paint property hierarchy

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

 // 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.
 
 #ifndef PaintChunk_h
 #define PaintChunk_h
 
-#include "platform/graphics/paint/PaintProperties.h"
+#include "platform/graphics/paint/PaintChunkProperties.h"
 #include <iosfwd>
 
 namespace blink {
 
 // A contiguous sequence of drawings with common paint properties.
 //
 // This is expected to be owned by the paint artifact which also owns the
 // related drawings.
 //
 // This is a Slimming Paint v2 class.
 struct PaintChunk {
     PaintChunk() : beginIndex(0), endIndex(0) { }
-    PaintChunk(unsigned begin, unsigned end, const PaintProperties& props)
+    PaintChunk(unsigned begin, unsigned end, const PaintChunkProperties& props)
         : beginIndex(begin), endIndex(end), properties(props) { }
 
     // Index of the first drawing in this chunk.
     unsigned beginIndex;
 
     // Index of the first drawing not in this chunk, so that there are
     // |endIndex - beginIndex| drawings in the chunk.
     unsigned endIndex;
 
     // The paint properties which apply to this chunk.
-    PaintProperties properties;
+    PaintChunkProperties properties;
 };
 
 inline bool operator==(const PaintChunk& a, const PaintChunk& b)
 {
     return a.beginIndex == b.beginIndex
         && a.endIndex == b.endIndex
         && a.properties == b.properties;
 }
 
 inline bool operator!=(const PaintChunk& a, const PaintChunk& b)
 {
     return !(a == b);
 }
 
 // Redeclared here to avoid ODR issues.
 // See platform/testing/PaintPrinters.h.
 void PrintTo(const PaintChunk&, std::ostream*);
 
 } // namespace blink
 
 #endif // PaintChunk_h