Move AX local bounding box calculation into LayoutObject

third_party/WebKit/Source/core/animation/CompositorAnimationsTest.cpp

Index: third_party/WebKit/Source/core/animation/CompositorAnimationsTest.cpp
diff --git a/third_party/WebKit/Source/core/animation/CompositorAnimationsTest.cpp b/third_party/WebKit/Source/core/animation/CompositorAnimationsTest.cpp
index 9d1dbed31c74263905003e2c8a360a0a2a6e96d1..65521bad1c66967dfca68500a9dc8b3bbfe3676a 100644
--- a/third_party/WebKit/Source/core/animation/CompositorAnimationsTest.cpp
+++ b/third_party/WebKit/Source/core/animation/CompositorAnimationsTest.cpp
@@ -282,6 +282,7 @@ public:
 
     const char* name() const override { return nullptr; }
     void layout() override { }
+    FloatRect localBoundingBoxRectForAccessibility() const { return FloatRect(); }
 
 private:
     explicit LayoutObjectProxy(Node* node)