Fix compilation failure due to overload of virtual function

test/unittests/value-serializer-unittest.cc

Index: test/unittests/value-serializer-unittest.cc
diff --git a/test/unittests/value-serializer-unittest.cc b/test/unittests/value-serializer-unittest.cc
index 7ca7433eebc1de8f0f4fa503b94f89692c33b239..cc7e09b60294d6d543cb1eacab0b90cb90c2e2ed 100644
--- a/test/unittests/value-serializer-unittest.cc
+++ b/test/unittests/value-serializer-unittest.cc
@@ -1894,6 +1894,7 @@ class OOMArrayBufferAllocator : public ArrayBuffer::Allocator {
  public:
   void* Allocate(size_t) override { return nullptr; }
   void* AllocateUninitialized(size_t) override { return nullptr; }
+  void Free(void* data, size_t length, AllocationMode mode) override {}

[Eric Holk, 2017/05/22 16:24:58]

Same comment as before, please add Reserve and SetProtection as well.

   void Free(void*, size_t) override {}
 };