Start USING_FAST_MALLOC for more paint data structures

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
index 4bc47b12d3e873d48b453d12c87ddb4e2b4e6a3a..7ff088c2d2f547214157b08705ba87b282beecd0 100644
--- a/third_party/WebKit/Source/platform/graphics/paint/PropertyTreeState.h
+++ b/third_party/WebKit/Source/platform/graphics/paint/PropertyTreeState.h
@@ -19,6 +19,8 @@ namespace blink {
 // DCHECKs ensure PropertyTreeState never retains the last reference to a
 // property tree node.
 class PLATFORM_EXPORT PropertyTreeState {

[chrishtr, 2017/03/29 16:08:58]

*PaintPropertyNode also?

[pdr., 2017/03/29 16:16:26]

I think we're good here because PaintPropertyNodes should be in the partition
alloc due to being RefCounted.

+  USING_FAST_MALLOC(PropertyTreeState);
+
  public:
   PropertyTreeState(const TransformPaintPropertyNode* transform,
                     const ClipPaintPropertyNode* clip,