Replace OVERRIDE->override and FINAL->final since we now require C++11.

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 cc7c00b1ca15c8d55588dc32883e12f4d314339a..5fb3173b06f991c8d6b5a34f30efe174b6686fea 100644
--- a/src/x64/lithium-codegen-x64.h
+++ b/src/x64/lithium-codegen-x64.h
@@ -143,8 +143,8 @@ class LCodeGen: public LCodeGenBase {
 
   // Code generation passes.  Returns true if code generation should
   // continue.
-  void GenerateBodyInstructionPre(LInstruction* instr) OVERRIDE;
-  void GenerateBodyInstructionPost(LInstruction* instr) OVERRIDE;
+  void GenerateBodyInstructionPre(LInstruction* instr) override;
+  void GenerateBodyInstructionPost(LInstruction* instr) override;
   bool GeneratePrologue();
   bool GenerateDeferredCode();
   bool GenerateJumpTable();
@@ -247,7 +247,7 @@ class LCodeGen: public LCodeGenBase {
   void RecordSafepointWithRegisters(LPointerMap* pointers,
                                     int arguments,
                                     Safepoint::DeoptMode mode);
-  void RecordAndWritePosition(int position) OVERRIDE;
+  void RecordAndWritePosition(int position) override;
 
   static Condition TokenToCondition(Token::Value op, bool is_unsigned);
   void EmitGoto(int block);
@@ -296,7 +296,7 @@ class LCodeGen: public LCodeGenBase {
                     int* offset,
                     AllocationSiteMode mode);
 
-  void EnsureSpaceForLazyDeopt(int space_needed) OVERRIDE;
+  void EnsureSpaceForLazyDeopt(int space_needed) override;
   void DoLoadKeyedExternalArray(LLoadKeyed* instr);
   void DoLoadKeyedFixedDoubleArray(LLoadKeyed* instr);
   void DoLoadKeyedFixedArray(LLoadKeyed* instr);
@@ -334,7 +334,7 @@ class LCodeGen: public LCodeGenBase {
 
   Safepoint::Kind expected_safepoint_kind_;
 
-  class PushSafepointRegistersScope FINAL BASE_EMBEDDED {
+  class PushSafepointRegistersScope final BASE_EMBEDDED {
    public:
     explicit PushSafepointRegistersScope(LCodeGen* codegen)
         : codegen_(codegen) {