Change ArrayBuffer API and implementation to use embedder-provided allocator.

src/v8.h

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 103 matching lines @@
   static Object* FillHeapNumberWithRandom(Object* heap_number,
                                           Context* context);
 
   // Idle notification directly from the API.
   static bool IdleNotification(int hint);
 
   static void AddCallCompletedCallback(CallCompletedCallback callback);
   static void RemoveCallCompletedCallback(CallCompletedCallback callback);
   static void FireCallCompletedCallback(Isolate* isolate);
 
+  static v8::ArrayBuffer::Allocator* ArrayBufferAllocator() {
+    return array_buffer_allocator_;
+  }
+
+  static void SetArrayBufferAllocator(v8::ArrayBuffer::Allocator *allocator) {
+    CHECK_EQ(NULL, array_buffer_allocator_);
+    array_buffer_allocator_ = allocator;
+  }
+
  private:
   static void InitializeOncePerProcessImpl();
   static void InitializeOncePerProcess();
 
   // True if engine is currently running
   static bool is_running_;
   // True if V8 has ever been run
   static bool has_been_set_up_;
   // True if error has been signaled for current engine
   // (reset to false if engine is restarted)
   static bool has_fatal_error_;
   // True if engine has been shut down
   // (reset if engine is restarted)
   static bool has_been_disposed_;
   // True if we are using the crankshaft optimizing compiler.
   static bool use_crankshaft_;
   // List of callbacks when a Call completes.
   static List<CallCompletedCallback>* call_completed_callbacks_;
+  // Allocator for external array buffers.
+  static v8::ArrayBuffer::Allocator* array_buffer_allocator_;
 };
 
 
 // JavaScript defines two kinds of 'nil'.
 enum NilValue { kNullValue, kUndefinedValue };
 
 
 // JavaScript defines two kinds of equality.
 enum EqualityKind { kStrictEquality, kNonStrictEquality };
 
 
 } }  // namespace v8::internal
 
 namespace i = v8::internal;
 
 #endif  // V8_V8_H_