Revert "Use V8 implementation of ArrayBuffer in Blink."

Source/bindings/v8/V8Binding.h

Index: Source/bindings/v8/V8Binding.h
diff --git a/Source/bindings/v8/V8Binding.h b/Source/bindings/v8/V8Binding.h
index b85c77290ab41a24778047c049abd43490393e4a..dd64ab197c1d23b66517bae581a86ed33dbadbde 100644
--- a/Source/bindings/v8/V8Binding.h
+++ b/Source/bindings/v8/V8Binding.h
@@ -70,8 +70,6 @@ namespace WebCore {
     // A helper for throwing JavaScript TypeError for not enough arguments.
     v8::Handle<v8::Value> throwNotEnoughArgumentsError(v8::Isolate*);
 
-    v8::ArrayBuffer::Allocator* v8ArrayBufferAllocator();
-
     inline v8::Handle<v8::Value> argumentOrNull(const v8::FunctionCallbackInfo<v8::Value>& args, int index)
     {
         return index >= args.Length() ? v8::Local<v8::Value>() : args[index];