Initial implementation of GeometryMapper

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

Index: third_party/WebKit/Source/platform/graphics/paint/PropertyTreeState.h
diff --git a/third_party/WebKit/Source/platform/graphics/paint/PropertyTreeState.h b/third_party/WebKit/Source/platform/graphics/paint/PropertyTreeState.h
new file mode 100644
index 0000000000000000000000000000000000000000..2c8daf3979d348d7f5a1693ba165e7521119c174
--- /dev/null
+++ b/third_party/WebKit/Source/platform/graphics/paint/PropertyTreeState.h
@@ -0,0 +1,33 @@
+// Copyright 2016 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 PropertyTreeState_h
+#define PropertyTreeState_h
+
+#include "wtf/HashFunctions.h"
+#include "wtf/HashTraits.h"
+
+namespace blink {
+
+class TransformPaintPropertyNode;
+class ClipPaintPropertyNode;
+class EffectPaintPropertyNode;
+
+// Represents the combination of transform, clip and effect nodes for a particular coordinate space.
+// See GeometryMapper.
+struct PropertyTreeState {
+    PropertyTreeState(
+        TransformPaintPropertyNode* transform,
+        ClipPaintPropertyNode* clip,
+        EffectPaintPropertyNode* effect)
+    : transform(transform), clip(clip), effect(effect) {}
+
+    TransformPaintPropertyNode* transform;
+    ClipPaintPropertyNode* clip;
+    EffectPaintPropertyNode* effect;
+};
+
+} // namespace blink
+
+#endif // PropertyTreeState_h