Move heap and CPU profilers into a dedicated directory.

src/profiler/circular-queue.h

Index: src/profiler/circular-queue.h
diff --git a/src/circular-queue.h b/src/profiler/circular-queue.h
similarity index 94%
rename from src/circular-queue.h
rename to src/profiler/circular-queue.h
index c312c597c673e71f5903f6a718e017a71121527f..3508b371c46ca3e99e8548818467c50a9244f5b5 100644
--- a/src/circular-queue.h
+++ b/src/profiler/circular-queue.h
@@ -2,8 +2,8 @@
 // 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"
@@ -65,4 +65,4 @@ class SamplingCircularQueue {
 
 } }  // namespace v8::internal
 
-#endif  // V8_CIRCULAR_QUEUE_H_
+#endif  // V8_PROFILER_CIRCULAR_QUEUE_H_