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

src/compiler/linkage.h

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_COMPILER_LINKAGE_H_
 #define V8_COMPILER_LINKAGE_H_
 
 #include "src/base/flags.h"
 #include "src/compiler/frame.h"
 #include "src/compiler/machine-type.h"
@@ skipping 28 matching lines @@
   // 0    <= location < 1023  -> a specific machine register
   // 1023 <= location < 1024  -> any machine register
   // 1024 <= location         -> a stack slot in the callee frame
   int16_t location_;
 };
 
 typedef Signature<LinkageLocation> LocationSignature;
 
 // Describes a call to various parts of the compiler. Every call has the notion
 // of a "target", which is the first input to the call.
-class CallDescriptor FINAL : public ZoneObject {
+class CallDescriptor final : public ZoneObject {
  public:
   // Describes the kind of this call, which determines the target.
   enum Kind {
     kCallCodeObject,  // target is a Code object
     kCallJSFunction,  // target is a JSFunction object
     kCallAddress      // target is a machine pointer
   };
 
   enum Flag {
     kNoFlags = 0u,
@@ skipping 178 matching lines @@
   CallDescriptor* const incoming_;
 
   DISALLOW_COPY_AND_ASSIGN(Linkage);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_LINKAGE_H_