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

src/mips64/lithium-codegen-mips64.h

Index: src/mips64/lithium-codegen-mips64.h
diff --git a/src/mips64/lithium-codegen-mips64.h b/src/mips64/lithium-codegen-mips64.h
index 8f0e82c4ed6e18555d92c0d06f614db70a87c140..0db3677d516ae99f71667dc5ed0017c8c204f548 100644
--- a/src/mips64/lithium-codegen-mips64.h
+++ b/src/mips64/lithium-codegen-mips64.h
@@ -170,7 +170,7 @@ class LCodeGen: public LCodeGenBase {
 
   // Code generation passes.  Returns true if code generation should
   // continue.
-  void GenerateBodyInstructionPre(LInstruction* instr) OVERRIDE;
+  void GenerateBodyInstructionPre(LInstruction* instr) override;
   bool GeneratePrologue();
   bool GenerateDeferredCode();
   bool GenerateJumpTable();
@@ -264,7 +264,7 @@ class LCodeGen: public LCodeGenBase {
                                     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);
@@ -346,7 +346,7 @@ class LCodeGen: public LCodeGenBase {
                                            LEnvironment* environment);
 
 
-  void EnsureSpaceForLazyDeopt(int space_needed) OVERRIDE;
+  void EnsureSpaceForLazyDeopt(int space_needed) override;
   void DoLoadKeyedExternalArray(LLoadKeyed* instr);
   void DoLoadKeyedFixedDoubleArray(LLoadKeyed* instr);
   void DoLoadKeyedFixedArray(LLoadKeyed* instr);
@@ -376,7 +376,7 @@ 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) {