Added Isolate parameter to CodeStub::GetCode().

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 71cef58434fb361a4f206faa816abf31221fbda2..dab1feaed01d18014d6a229ef57c1bc55a609e3d 100644
--- a/src/x64/code-stubs-x64.h
+++ b/src/x64/code-stubs-x64.h
@@ -68,7 +68,7 @@ class StoreBufferOverflowStub: public PlatformCodeStub {
   void Generate(MacroAssembler* masm);
 
   virtual bool IsPregenerated() { return true; }
-  static void GenerateFixedRegStubsAheadOfTime();
+  static void GenerateFixedRegStubsAheadOfTime(Isolate* isolate);
   virtual bool SometimesSetsUpAFrame() { return false; }
 
  private:
@@ -402,7 +402,7 @@ class RecordWriteStub: public PlatformCodeStub {
   };
 
   virtual bool IsPregenerated();
-  static void GenerateFixedRegStubsAheadOfTime();
+  static void GenerateFixedRegStubsAheadOfTime(Isolate* isolate);
   virtual bool SometimesSetsUpAFrame() { return false; }
 
   static const byte kTwoByteNopInstruction = 0x3c;  // Cmpb al, #imm8.