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

src/d8.cc

Index: src/d8.cc
diff --git a/src/d8.cc b/src/d8.cc
index 0f4b5e17ad1287d72826d646ed150132e8cd0e5b..e66a2ece600bb0ab54da79510cb4a7db96f75d89 100644
--- a/src/d8.cc
+++ b/src/d8.cc
@@ -1635,9 +1635,7 @@ class ShellArrayBufferAllocator : public v8::ArrayBuffer::Allocator {
   virtual void* AllocateUninitialized(size_t length) {
     return malloc(length);
   }
-  virtual void Free(void* data, size_t) { free(data); }
-  // TODO(dslomov): Remove when v8:2823 is fixed.
-  virtual void Free(void* data) { UNREACHABLE(); }
+  virtual void Free(void* data) { free(data); }
 };