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

src/compiler/mips/instruction-selector-mips.cc

Index: src/compiler/mips/instruction-selector-mips.cc
diff --git a/src/compiler/mips/instruction-selector-mips.cc b/src/compiler/mips/instruction-selector-mips.cc
index 28e030fa1aa87fc92f32af17d1832573ffa37f69..e66979a6820900151cd1925ec9d97ded6b51d9e8 100644
--- a/src/compiler/mips/instruction-selector-mips.cc
+++ b/src/compiler/mips/instruction-selector-mips.cc
@@ -18,7 +18,7 @@ namespace compiler {
 
 
 // Adds Mips-specific methods for generating InstructionOperands.
-class MipsOperandGenerator FINAL : public OperandGenerator {
+class MipsOperandGenerator final : public OperandGenerator {
  public:
   explicit MipsOperandGenerator(InstructionSelector* selector)
       : OperandGenerator(selector) {}