Move platform abstraction to base library

src/sweeper-thread.cc

 // Copyright 2012 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.
 
 #include "src/sweeper-thread.h"
 
 #include "src/v8.h"
 
 #include "src/isolate.h"
 #include "src/v8threads.h"
@@ skipping 49 matching lines @@
   start_sweeping_semaphore_.Signal();
 }
 
 
 void SweeperThread::WaitForSweeperThread() {
   end_sweeping_semaphore_.Wait();
 }
 
 
 bool SweeperThread::SweepingCompleted() {
-  bool value = end_sweeping_semaphore_.WaitFor(TimeDelta::FromSeconds(0));
+  bool value = end_sweeping_semaphore_.WaitFor(base::TimeDelta::FromSeconds(0));
   if (value) {
     end_sweeping_semaphore_.Signal();
   }
   return value;
 }
 
 
 int SweeperThread::NumberOfThreads(int max_available) {
   if (!FLAG_concurrent_sweeping && !FLAG_parallel_sweeping) return 0;
   if (FLAG_sweeper_threads > 0) return FLAG_sweeper_threads;
   if (FLAG_concurrent_sweeping) return max_available - 1;
   ASSERT(FLAG_parallel_sweeping);
   return max_available;
 }
 
 } }  // namespace v8::internal