Remove uses of VisitDOMWrapper

third_party/WebKit/Source/modules/webgl/WebGLObject.h

Index: third_party/WebKit/Source/modules/webgl/WebGLObject.h
diff --git a/third_party/WebKit/Source/modules/webgl/WebGLObject.h b/third_party/WebKit/Source/modules/webgl/WebGLObject.h
index a885201c698454c6f628778f76641a877a17ef4f..64a42366cc3097ff905200145c67cc534cd60ce5 100644
--- a/third_party/WebKit/Source/modules/webgl/WebGLObject.h
+++ b/third_party/WebKit/Source/modules/webgl/WebGLObject.h
@@ -97,10 +97,6 @@ class WebGLObject : public GarbageCollectedFinalized<WebGLObject>,
   DECLARE_VIRTUAL_TRACE_WRAPPERS();
 
  protected:
-  // To allow WebGL[2]RenderingContextBase to call visitChildDOMWrappers.
-  friend class WebGLRenderingContextBase;
-  friend class WebGL2RenderingContextBase;
-
   explicit WebGLObject(WebGLRenderingContextBase*);
 
   // deleteObjectImpl should be only called once to delete the OpenGL resource.
@@ -121,9 +117,6 @@ class WebGLObject : public GarbageCollectedFinalized<WebGLObject>,
 
   virtual gpu::gles2::GLES2Interface* getAGLInterface() const = 0;
 
-  virtual void visitChildDOMWrappers(v8::Isolate*,
-                                     const v8::Persistent<v8::Object>&) {}
-
   // Used by leaf subclasses to run the destruction sequence -- what would
   // be in the destructor of the base class, if it could be. Must be called
   // no more than once.