Add size_t length argument to v8::ArrayBuffer::Allocator::Free.

src/runtime.cc

Index: src/runtime.cc
diff --git a/src/runtime.cc b/src/runtime.cc
index df31e70d5c0fcfdefe87e0226717818e8d9ba756..97751470426cc62109970a2f17477e364c9e5ba4 100644
--- a/src/runtime.cc
+++ b/src/runtime.cc
@@ -689,7 +689,9 @@ void Runtime::FreeArrayBuffer(Isolate* isolate,
   isolate->heap()->AdjustAmountOfExternalAllocatedMemory(
       -static_cast<intptr_t>(allocated_length));
   CHECK(V8::ArrayBufferAllocator() != NULL);
-  V8::ArrayBufferAllocator()->Free(phantom_array_buffer->backing_store());
+  V8::ArrayBufferAllocator()->Free(
+      phantom_array_buffer->backing_store(),
+      allocated_length);
 }