Oilpan: Correct static_asserts about VectorTraits::canInitializeWithMemset

Source/core/html/canvas/WebGLVertexArrayObjectOES.h

Index: Source/core/html/canvas/WebGLVertexArrayObjectOES.h
diff --git a/Source/core/html/canvas/WebGLVertexArrayObjectOES.h b/Source/core/html/canvas/WebGLVertexArrayObjectOES.h
index 65bf5255b758c9315b64d6fd0e983142b9dd4e11..7aed58802d753516a04b81bbe11d55acc2813a4d 100644
--- a/Source/core/html/canvas/WebGLVertexArrayObjectOES.h
+++ b/Source/core/html/canvas/WebGLVertexArrayObjectOES.h
@@ -113,15 +113,6 @@ private:
 
 } // namespace blink
 
-namespace WTF {
-
-template<>
-struct VectorTraits<blink::WebGLVertexArrayObjectOES::VertexAttribState> : SimpleClassVectorTraits<blink::WebGLVertexArrayObjectOES::VertexAttribState> {
-    // Must use the constructor.
-    static const bool canInitializeWithMemset = false;
-    static const bool canCopyWithMemcpy = true;
-};
-
-} // namespace WTF
+WTF_ALLOW_INIT_WITH_MEM_FUNCTIONS(blink::WebGLVertexArrayObjectOES::VertexAttribState);
 
 #endif // WebGLVertexArrayObjectOES_h