Use Chrome compatible naming for compiler specifics.

src/base/platform/semaphore.h

 // Copyright 2013 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_BASE_PLATFORM_SEMAPHORE_H_
 #define V8_BASE_PLATFORM_SEMAPHORE_H_
 
 #include "src/base/lazy-instance.h"
 #if V8_OS_WIN
 #include "src/base/win32-headers.h"
@@ skipping 13 matching lines @@
 
 // ----------------------------------------------------------------------------
 // Semaphore
 //
 // A semaphore object is a synchronization object that maintains a count. The
 // count is decremented each time a thread completes a wait for the semaphore
 // object and incremented each time a thread signals the semaphore. When the
 // count reaches zero,  threads waiting for the semaphore blocks until the
 // count becomes non-zero.
 
-class Semaphore V8_FINAL {
+class Semaphore FINAL {
  public:
   explicit Semaphore(int count);
   ~Semaphore();
 
   // Increments the semaphore counter.
   void Signal();
 
   // Suspends the calling thread until the semaphore counter is non zero
   // and then decrements the semaphore counter.
   void Wait();
 
   // Suspends the calling thread until the counter is non zero or the timeout
   // time has passed. If timeout happens the return value is false and the
   // counter is unchanged. Otherwise the semaphore counter is decremented and
   // true is returned.
-  bool WaitFor(const TimeDelta& rel_time) V8_WARN_UNUSED_RESULT;
+  bool WaitFor(const TimeDelta& rel_time) WARN_UNUSED_RESULT;
 
 #if V8_OS_MACOSX
   typedef semaphore_t NativeHandle;
 #elif V8_OS_POSIX
   typedef sem_t NativeHandle;
 #elif V8_OS_WIN
   typedef HANDLE NativeHandle;
 #endif
 
   NativeHandle& native_handle() {
@@ skipping 31 matching lines @@
 struct LazySemaphore {
   typedef typename LazyDynamicInstance<Semaphore, CreateSemaphoreTrait<N>,
                                        ThreadSafeInitOnceTrait>::type type;
 };
 
 #define LAZY_SEMAPHORE_INITIALIZER LAZY_DYNAMIC_INSTANCE_INITIALIZER
 
 } }  // namespace v8::base
 
 #endif  // V8_BASE_PLATFORM_SEMAPHORE_H_