Move platform abstraction to base library

src/hydrogen-range-analysis.cc

 // 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.
 
 #include "src/hydrogen-range-analysis.h"
 
 namespace v8 {
 namespace internal {
 
 
 class Pending {
  public:
   Pending(HBasicBlock* block, int last_changed_range)
       : block_(block), last_changed_range_(last_changed_range) {}
 
   HBasicBlock* block() const { return block_; }
   int last_changed_range() const { return last_changed_range_; }
 
  private:
   HBasicBlock* block_;
   int last_changed_range_;
 };
 
 
 void HRangeAnalysisPhase::TraceRange(const char* msg, ...) {
   if (FLAG_trace_range) {
     va_list arguments;
     va_start(arguments, msg);
-    OS::VPrint(msg, arguments);
+    base::OS::VPrint(msg, arguments);
     va_end(arguments);
   }
 }
 
 
 void HRangeAnalysisPhase::Run() {
   HBasicBlock* block(graph()->entry_block());
   ZoneList<Pending> stack(graph()->blocks()->length(), zone());
   while (block != NULL) {
     TraceRange("Analyzing block B%d\n", block->block_id());
@@ skipping 241 matching lines @@
     }
   }
 
   in_worklist_.Clear();
   ASSERT(in_worklist_.IsEmpty());
   ASSERT(worklist_.is_empty());
 }
 
 
 } }  // namespace v8::internal