Move heap and CPU profilers into a dedicated directory.

src/profiler/heap-profiler.h

Index: src/profiler/heap-profiler.h
diff --git a/src/heap-profiler.h b/src/profiler/heap-profiler.h
similarity index 95%
rename from src/heap-profiler.h
rename to src/profiler/heap-profiler.h
index 20fd2c73fdeb0b562ecc08fb95b72b0100c0767d..b304f388ffadc7dc1e583e188bbb74efb6cbeaeb 100644
--- a/src/heap-profiler.h
+++ b/src/profiler/heap-profiler.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_HEAP_PROFILER_H_
-#define V8_HEAP_PROFILER_H_
+#ifndef V8_PROFILER_HEAP_PROFILER_H_
+#define V8_PROFILER_HEAP_PROFILER_H_
 
 #include "src/base/smart-pointers.h"
 #include "src/isolate.h"
@@ -81,4 +81,4 @@ class HeapProfiler {
 
 } }  // namespace v8::internal
 
-#endif  // V8_HEAP_PROFILER_H_
+#endif  // V8_PROFILER_HEAP_PROFILER_H_