X87: Unify JSEntryStub and JSConstructEntryStub, and some more code stub cleanups.

src/x87/code-stubs-x87.h

Index: src/x87/code-stubs-x87.h
diff --git a/src/x87/code-stubs-x87.h b/src/x87/code-stubs-x87.h
index b5003640f43a2f186d8465a42cb754e0b0e8a2ed..581d5eaa289256a256b7c97230e0bdd3870883c9 100644
--- a/src/x87/code-stubs-x87.h
+++ b/src/x87/code-stubs-x87.h
@@ -66,8 +66,6 @@ class NameDictionaryLookupStub: public PlatformCodeStub {
                  IndexBits::encode(index.code()) | LookupModeBits::encode(mode);
   }
 
-  void Generate(MacroAssembler* masm);
-
   static void GenerateNegativeLookup(MacroAssembler* masm,
                                      Label* miss,
                                      Label* done,
@@ -116,7 +114,7 @@ class NameDictionaryLookupStub: public PlatformCodeStub {
   class IndexBits: public BitField<int, 6, 3> {};
   class LookupModeBits: public BitField<LookupMode, 9, 1> {};
 
-  DEFINE_CODE_STUB(NameDictionaryLookup, PlatformCodeStub);
+  DEFINE_PLATFORM_CODE_STUB(NameDictionaryLookup, PlatformCodeStub);
 };
 
 
@@ -324,7 +322,7 @@ class RecordWriteStub: public PlatformCodeStub {
 
   virtual inline Major MajorKey() const FINAL OVERRIDE { return RecordWrite; }
 
-  void Generate(MacroAssembler* masm);
+  virtual void Generate(MacroAssembler* masm) OVERRIDE;
   void GenerateIncremental(MacroAssembler* masm, Mode mode);
   void CheckNeedsToInformIncrementalMarker(
       MacroAssembler* masm,