npm install fails due to the following problem.

../src/third-party/open-vcdiff/src/vcdecoder.cc:563:3: error: no type named 'unique_ptr' in namespace 'std'
UNIQUE_PTR addr_cache_;
^~~~~~~~~~
../src/third-party/open-vcdiff/src/unique_ptr.h:27:25: note: expanded from macro 'UNIQUE_PTR'

define UNIQUE_PTR std::unique_ptr

               ~~~~~^

../src/third-party/open-vcdiff/src/vcdecoder.cc:563:13: error: expected member name or ';' after declaration specifiers
UNIQUE_PTR addr_cache_;

../src/third-party/open-vcdiff/src/vcdecoder.cc:566:3: error: no type named 'unique_ptr' in namespace 'std'
  UNIQUE_PTR<VCDiffCodeTableData> custom_code_table_;
  ^~~~~~~~~~
../src/third-party/open-vcdiff/src/unique_ptr.h:27:25: note: expanded from macro 'UNIQUE_PTR'
#define UNIQUE_PTR std::unique_ptr
                   ~~~~~^
../src/third-party/open-vcdiff/src/vcdecoder.cc:566:13: error: expected member name or ';' after declaration specifiers
  UNIQUE_PTR<VCDiffCodeTableData> custom_code_table_;
  ~~~~~~~~~~^
../src/third-party/open-vcdiff/src/vcdecoder.cc:575:3: error: no type named 'unique_ptr' in namespace 'std'
  UNIQUE_PTR<VCDiffStreamingDecoderImpl> custom_code_table_decoder_;
  ^~~~~~~~~~
../src/third-party/open-vcdiff/src/unique_ptr.h:27:25: note: expanded from macro 'UNIQUE_PTR'
#define UNIQUE_PTR std::unique_ptr
                   ~~~~~^
../src/third-party/open-vcdiff/src/vcdecoder.cc:575:13: error: expected member name or ';' after declaration specifiers
  UNIQUE_PTR<VCDiffStreamingDecoderImpl> custom_code_table_decoder_;
  ~~~~~~~~~~^
../src/third-party/open-vcdiff/src/vcdecoder.cc:450:16: error: use of undeclared identifier 'custom_code_table_decoder_'; did you mean 'custom_code_table_string_'?
    } else if (custom_code_table_decoder_.get()) {
               ^~~~~~~~~~~~~~~~~~~~~~~~~~
               custom_code_table_string_
../src/third-party/open-vcdiff/src/vcdecoder.cc:569:10: note: 'custom_code_table_string_' declared here
  string custom_code_table_string_;
         ^
../src/third-party/open-vcdiff/src/vcdecoder.cc:450:43: error: no member named 'get' in 'std::basic_string<char>'
    } else if (custom_code_table_decoder_.get()) {
               ~~~~~~~~~~~~~~~~~~~~~~~~~~ ^
../src/third-party/open-vcdiff/src/vcdecoder.cc:474:45: error: use of undeclared identifier 'addr_cache_'; did you mean 'addr_cache'?
  VCDiffAddressCache* addr_cache() { return addr_cache_.get(); }
                                            ^~~~~~~~~~~
                                            addr_cache
../src/third-party/open-vcdiff/src/vcdecoder.cc:474:23: note: 'addr_cache' declared here
  VCDiffAddressCache* addr_cache() { return addr_cache_.get(); }
                      ^
../src/third-party/open-vcdiff/src/vcdecoder.cc:474:45: error: reference to non-static member function must be called; did you mean to call it with no arguments?
  VCDiffAddressCache* addr_cache() { return addr_cache_.get(); }
                                            ^~~~~~~~~~~
                                                       ()
../src/third-party/open-vcdiff/src/vcdecoder.cc:474:56: error: member reference type 'open_vcdiff::VCDiffAddressCache *' is a pointer; maybe you meant to use '->'?
  VCDiffAddressCache* addr_cache() { return addr_cache_.get(); }
                                            ~~~~~~~~~~~^
                                                       ->
../src/third-party/open-vcdiff/src/vcdecoder.cc:474:57: error: no member named 'get' in 'open_vcdiff::VCDiffAddressCache'
  VCDiffAddressCache* addr_cache() { return addr_cache_.get(); }
                                            ~~~~~~~~~~~ ^
../src/third-party/open-vcdiff/src/vcdecoder.cc:500:41: error: use of undeclared identifier 'addr_cache_'; did you mean 'addr_cache'?
  bool FoundFileHeader() const { return addr_cache_.get() != NULL; }
                                        ^~~~~~~~~~~
                                        addr_cache
../src/third-party/open-vcdiff/src/vcdecoder.cc:474:23: note: 'addr_cache' declared here
  VCDiffAddressCache* addr_cache() { return addr_cache_.get(); }
                      ^
../src/third-party/open-vcdiff/src/vcdecoder.cc:500:41: error: reference to non-static member function must be called
  bool FoundFileHeader() const { return addr_cache_.get() != NULL; }
                                        ^~~~~~~~~~~
../src/third-party/open-vcdiff/src/vcdecoder.cc:643:3: error: use of undeclared identifier 'addr_cache_'; did you mean 'addr_cache'?
  addr_cache_.reset();
  ^~~~~~~~~~~
  addr_cache
../src/third-party/open-vcdiff/src/vcdecoder.cc:474:23: note: 'addr_cache' declared here
  VCDiffAddressCache* addr_cache() { return addr_cache_.get(); }
                      ^
../src/third-party/open-vcdiff/src/vcdecoder.cc:643:3: error: reference to non-static member function must be called; did you mean to call it with no arguments?
  addr_cache_.reset();
  ^~~~~~~~~~~
             ()
../src/third-party/open-vcdiff/src/vcdecoder.cc:643:14: error: member reference type 'open_vcdiff::VCDiffAddressCache *' is a pointer; maybe you meant to use '->'?
  addr_cache_.reset();
  ~~~~~~~~~~~^
             ->
../src/third-party/open-vcdiff/src/vcdecoder.cc:643:15: error: no member named 'reset' in 'open_vcdiff::VCDiffAddressCache'
  addr_cache_.reset();
  ~~~~~~~~~~~ ^
../src/third-party/open-vcdiff/src/vcdecoder.cc:644:3: error: use of undeclared identifier 'custom_code_table_'
  custom_code_table_.reset();
  ^

I was using OS X Yosemite for building this. I am sure about that I have C++ 11 support complier and I can compile the vcdiff correctly.