Stop using deprecated hash_map in vtune-jit.cc.

Fixes https://github.com/nodejs/node/issues/6422.

Review-Url: https://codereview.chromium.org/1924403002
Cr-Commit-Position: refs/heads/master@{#35916}

src/third_party/vtune/vtune-jit.cc

@@ -57,24 +57,8 @@
 */
 #include <string.h>
 
-#ifdef WIN32
-#include <hash_map>
-using namespace std;
-#else
-// To avoid GCC 4.4 compilation warning about hash_map being deprecated.
-#define OLD_DEPRECATED __DEPRECATED
-#undef __DEPRECATED
-#if defined (ANDROID)
-#include <hash_map>
-using namespace std;
-#else
-#include <ext/hash_map>
-using namespace __gnu_cxx;
-#endif
-#define __DEPRECATED OLD_DEPRECATED
-#endif
-
 #include <list>
+#include <unordered_map>
 
 #include "v8-vtune.h"
 #include "vtune-jit.h"
@@ -126,11 +110,8 @@ struct HashForCodeObject {
   }
 };
 
-#ifdef WIN32
-typedef hash_map<void*, void*> JitInfoMap;
-#else
-typedef hash_map<void*, void*, HashForCodeObject, SameCodeObjects> JitInfoMap;
-#endif
+typedef std::unordered_map<void*, void*, HashForCodeObject, SameCodeObjects>
+    JitInfoMap;
 
 static JitInfoMap* GetEntries() {
   static JitInfoMap* entries;