InlinedVisitor: Migrate html to use inlined tracing

Source/core/html/canvas/WebGL2RenderingContext.h

Index: Source/core/html/canvas/WebGL2RenderingContext.h
diff --git a/Source/core/html/canvas/WebGL2RenderingContext.h b/Source/core/html/canvas/WebGL2RenderingContext.h
index 28a89b74577d786d1d50a236830921990d9fcc05..2535eca3a1b826f454891f26183fd844edc96fee 100644
--- a/Source/core/html/canvas/WebGL2RenderingContext.h
+++ b/Source/core/html/canvas/WebGL2RenderingContext.h
@@ -19,7 +19,7 @@ public:
     String contextName() const override { return "WebGL2RenderingContext"; }
     void registerContextExtensions() override;
 
-    void trace(Visitor*) override;
+    DECLARE_VIRTUAL_TRACE();
 
 protected:
     WebGL2RenderingContext(HTMLCanvasElement* passedCanvas, PassOwnPtr<blink::WebGraphicsContext3D>, const WebGLContextAttributes& requestedAttributes);