Correctify instanceof and make it optimizable.

src/x64/lithium-codegen-x64.h

Index: src/x64/lithium-codegen-x64.h
diff --git a/src/x64/lithium-codegen-x64.h b/src/x64/lithium-codegen-x64.h
index b08eff1952a3b7b8d49699cecb39f469571ab90a..2c605c2009c1677eb1c9bb24d0836af042be57ea 100644
--- a/src/x64/lithium-codegen-x64.h
+++ b/src/x64/lithium-codegen-x64.h
@@ -99,8 +99,6 @@ class LCodeGen: public LCodeGenBase {
   void DoDeferredStringCharCodeAt(LStringCharCodeAt* instr);
   void DoDeferredStringCharFromCode(LStringCharFromCode* instr);
   void DoDeferredAllocate(LAllocate* instr);
-  void DoDeferredInstanceOfKnownGlobal(LInstanceOfKnownGlobal* instr,
-                                       Label* map_check);
   void DoDeferredInstanceMigration(LCheckMaps* instr, Register object);
   void DoDeferredLoadMutableDouble(LLoadFieldByIndex* instr,
                                    Register object,
@@ -255,7 +253,9 @@ class LCodeGen: public LCodeGenBase {
   // EmitBranch expects to be the last instruction of a block.
   template<class InstrType>
   void EmitBranch(InstrType instr, Condition cc);
-  template<class InstrType>
+  template <class InstrType>
+  void EmitTrueBranch(InstrType instr, Condition cc);
+  template <class InstrType>
   void EmitFalseBranch(InstrType instr, Condition cc);
   void EmitNumberUntagD(LNumberUntagD* instr, Register input,
                         XMMRegister result, NumberUntagDMode mode);