Remove support for externally backed elements from the API

src/d8.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_D8_H_
 #define V8_D8_H_
 
 #ifndef V8_SHARED
 #include "src/allocation.h"
 #include "src/hashmap.h"
@@ skipping 367 matching lines @@
   static Counter* GetCounter(const char* name, bool is_histogram);
   static void InstallUtilityScript(Isolate* isolate);
 #endif  // !V8_SHARED
   static void Initialize(Isolate* isolate);
   static void InitializeDebugger(Isolate* isolate);
   static void RunShell(Isolate* isolate);
   static bool SetOptions(int argc, char* argv[]);
   static Handle<ObjectTemplate> CreateGlobalTemplate(Isolate* isolate);
   static Handle<FunctionTemplate> CreateArrayBufferTemplate(FunctionCallback);
   static Handle<FunctionTemplate> CreateArrayTemplate(FunctionCallback);
-  static Handle<Value> CreateExternalArrayBuffer(Isolate* isolate,
-                                                 Handle<Object> buffer,
-                                                 int32_t size);
-  static Handle<Object> CreateExternalArray(Isolate* isolate,
-                                            Handle<Object> array,
-                                            Handle<Object> buffer,
-                                            ExternalArrayType type,
-                                            int32_t length,
-                                            int32_t byteLength,
-                                            int32_t byteOffset,
-                                            int32_t element_size);
-  static void CreateExternalArray(
-      const v8::FunctionCallbackInfo<v8::Value>& args,
-      ExternalArrayType type,
-      int32_t element_size);
-  static void ExternalArrayWeakCallback(Isolate* isolate,
-                                        Persistent<Object>* object,
-                                        uint8_t* data);
 };
 
 
 }  // namespace v8
 
 
 #endif  // V8_D8_H_