Introduce code stub constructors for stub keys.

src/x64/code-stubs-x64.h

Index: src/x64/code-stubs-x64.h
diff --git a/src/x64/code-stubs-x64.h b/src/x64/code-stubs-x64.h
index c8e3835dc46348349ce56b03d37dc87e9b91b6a4..df597ce6a6954008bc253d3f5ba8b798091731fd 100644
--- a/src/x64/code-stubs-x64.h
+++ b/src/x64/code-stubs-x64.h
@@ -5,8 +5,6 @@
 #ifndef V8_X64_CODE_STUBS_X64_H_
 #define V8_X64_CODE_STUBS_X64_H_
 
-#include "src/code-stubs.h"
-
 namespace v8 {
 namespace internal {
 
@@ -25,7 +23,6 @@ class StringHelper : public AllStatic {
                                      Register count,
                                      String::Encoding encoding);
 
-
   // Generate string hash.
   static void GenerateHashInit(MacroAssembler* masm,
                                Register hash,
@@ -110,8 +107,6 @@ class NameDictionaryLookupStub: public PlatformCodeStub {
       NameDictionary::kHeaderSize +
       NameDictionary::kElementsStartIndex * kPointerSize;
 
-  virtual inline Major MajorKey() const FINAL OVERRIDE;
-
   Register dictionary() const {
     return Register::from_code(DictionaryBits::decode(minor_key_));
   }
@@ -131,7 +126,7 @@ class NameDictionaryLookupStub: public PlatformCodeStub {
   class IndexBits: public BitField<int, 8, 4> {};
   class LookupModeBits: public BitField<LookupMode, 12, 1> {};
 
-  DISALLOW_COPY_AND_ASSIGN(NameDictionaryLookupStub);
+  DEFINE_CODE_STUB(NameDictionaryLookup, PlatformCodeStub);
 };
 
 
@@ -151,6 +146,9 @@ class RecordWriteStub: public PlatformCodeStub {
                  SaveFPRegsModeBits::encode(fp_mode);
   }
 
+  RecordWriteStub(uint32_t key, Isolate* isolate)
+      : PlatformCodeStub(key, isolate), regs_(object(), address(), value()) {}
+
   enum Mode {
     STORE_BUFFER_ONLY,
     INCREMENTAL,
@@ -334,7 +332,7 @@ class RecordWriteStub: public PlatformCodeStub {
     kUpdateRememberedSetOnNoNeedToInformIncrementalMarker
   };
 
-  virtual inline Major MajorKey() const FINAL OVERRIDE;
+  virtual Major MajorKey() const FINAL OVERRIDE { return RecordWrite; }
 
   void Generate(MacroAssembler* masm);
   void GenerateIncremental(MacroAssembler* masm, Mode mode);