Move Hydrogen and Lithium to src/crankshaft/

src/crankshaft/hydrogen-dce.h

Index: src/crankshaft/hydrogen-dce.h
diff --git a/src/hydrogen-dce.h b/src/crankshaft/hydrogen-dce.h
similarity index 81%
rename from src/hydrogen-dce.h
rename to src/crankshaft/hydrogen-dce.h
index 08f5326045394187519e85cdc562758e8c35275f..f620a3cfa853f5f570e03e9d11f9b539539373f0 100644
--- a/src/hydrogen-dce.h
+++ b/src/crankshaft/hydrogen-dce.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_DCE_H_
-#define V8_HYDROGEN_DCE_H_
+#ifndef V8_CRANKSHAFT_HYDROGEN_DCE_H_
+#define V8_CRANKSHAFT_HYDROGEN_DCE_H_
 
-#include "src/hydrogen.h"
+#include "src/crankshaft/hydrogen.h"
 
 namespace v8 {
 namespace internal {
@@ -32,4 +32,4 @@ class HDeadCodeEliminationPhase : public HPhase {
 }  // namespace internal
 }  // namespace v8
 
-#endif  // V8_HYDROGEN_DCE_H_
+#endif  // V8_CRANKSHAFT_HYDROGEN_DCE_H_