Move heap and CPU profilers into a dedicated directory.

src/profiler/circular-queue.h

 // Copyright 2010 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_CIRCULAR_QUEUE_H_
-#define V8_CIRCULAR_QUEUE_H_
+#ifndef V8_PROFILER_CIRCULAR_QUEUE_H_
+#define V8_PROFILER_CIRCULAR_QUEUE_H_
 
 #include "src/base/atomicops.h"
 #include "src/globals.h"
 
 namespace v8 {
 namespace internal {
 
 
 // Lock-free cache-friendly sampling circular queue for large
 // records. Intended for fast transfer of large records between a
@@ skipping 41 matching lines @@
   Entry buffer_[Length];
   V8_ALIGNED(PROCESSOR_CACHE_LINE_SIZE) Entry* enqueue_pos_;
   V8_ALIGNED(PROCESSOR_CACHE_LINE_SIZE) Entry* dequeue_pos_;
 
   DISALLOW_COPY_AND_ASSIGN(SamplingCircularQueue);
 };
 
 
 } }  // namespace v8::internal
 
-#endif  // V8_CIRCULAR_QUEUE_H_
+#endif  // V8_PROFILER_CIRCULAR_QUEUE_H_