Removed useless implementations of GetName and Print for code stubs, the common

src/x64/code-stubs-x64.h

Index: src/x64/code-stubs-x64.h
===================================================================
--- src/x64/code-stubs-x64.h	(revision 8575)
+++ src/x64/code-stubs-x64.h	(working copy)
@@ -79,7 +79,7 @@
 
   char* name_;
 
-  const char* GetName();
+  virtual const char* GetName();
 
 #ifdef DEBUG
   void Print() {
@@ -179,7 +179,7 @@
 
   char* name_;
 
-  const char* GetName();
+  virtual const char* GetName();
 
 #ifdef DEBUG
   void Print() {
@@ -410,14 +410,6 @@
   int MinorKey() { return 0; }
 
   void Generate(MacroAssembler* masm);
-
-  const char* GetName() { return "NumberToStringStub"; }
-
-#ifdef DEBUG
-  void Print() {
-    PrintF("NumberToStringStub\n");
-  }
-#endif
 };
 
 
@@ -461,13 +453,6 @@
       StringDictionary::kHeaderSize +
       StringDictionary::kElementsStartIndex * kPointerSize;
 
-
-#ifdef DEBUG
-  void Print() {
-    PrintF("StringDictionaryLookupStub\n");
-  }
-#endif
-
   Major MajorKey() { return StringDictionaryNegativeLookup; }
 
   int MinorKey() {