Move Hydrogen and Lithium to src/crankshaft/

src/crankshaft/hydrogen-representation-changes.h

Index: src/crankshaft/hydrogen-representation-changes.h
diff --git a/src/hydrogen-representation-changes.h b/src/crankshaft/hydrogen-representation-changes.h
similarity index 77%
rename from src/hydrogen-representation-changes.h
rename to src/crankshaft/hydrogen-representation-changes.h
index 0d60739e3e8c01ae90497f55dd519029fd08758d..d8403947c354cced1b2fee7df88755e7cbd37584 100644
--- a/src/hydrogen-representation-changes.h
+++ b/src/crankshaft/hydrogen-representation-changes.h
@@ -2,10 +2,10 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef V8_HYDROGEN_REPRESENTATION_CHANGES_H_
-#define V8_HYDROGEN_REPRESENTATION_CHANGES_H_
+#ifndef V8_CRANKSHAFT_HYDROGEN_REPRESENTATION_CHANGES_H_
+#define V8_CRANKSHAFT_HYDROGEN_REPRESENTATION_CHANGES_H_
 
-#include "src/hydrogen.h"
+#include "src/crankshaft/hydrogen.h"
 
 namespace v8 {
 namespace internal {
@@ -30,4 +30,4 @@ class HRepresentationChangesPhase : public HPhase {
 }  // namespace internal
 }  // namespace v8
 
-#endif  // V8_HYDROGEN_REPRESENTATION_CHANGES_H_
+#endif  // V8_CRANKSHAFT_HYDROGEN_REPRESENTATION_CHANGES_H_