Adding allocator annotations to blink classes and structs.

Source/core/layout/shapes/Shape.h

Index: Source/core/layout/shapes/Shape.h
diff --git a/Source/core/layout/shapes/Shape.h b/Source/core/layout/shapes/Shape.h
index 5b40abd229f2ba8486839cdbf2820b851525015c..a4250c59e29363d16904e735d8aa30a3b369dff7 100644
--- a/Source/core/layout/shapes/Shape.h
+++ b/Source/core/layout/shapes/Shape.h
@@ -68,10 +68,12 @@ struct LineSegment {
 // physical coordinates.
 
 class CORE_EXPORT Shape {
+    WTF_MAKE_FAST_ALLOCATED(Shape);
 public:
     struct DisplayPaths {
         Path shape;
         Path marginShape;
+        STACK_ALLOCATED();
     };
     static PassOwnPtr<Shape> createShape(const BasicShape*, const LayoutSize& logicalBoxSize, WritingMode, float margin);
     static PassOwnPtr<Shape> createRasterShape(Image*, float threshold, const LayoutRect& imageRect, const LayoutRect& marginRect, WritingMode, float margin);