Move Hydrogen and Lithium to src/crankshaft/

src/crankshaft/hydrogen.h

Index: src/crankshaft/hydrogen.h
diff --git a/src/hydrogen.h b/src/crankshaft/hydrogen.h
similarity index 99%
rename from src/hydrogen.h
rename to src/crankshaft/hydrogen.h
index 464d857a46f832794cf958d4c3660514e0476cee..6c60ea775c00b71ef84b503b65d49cc5968165b4 100644
--- a/src/hydrogen.h
+++ b/src/crankshaft/hydrogen.h
@@ -2,15 +2,15 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef V8_HYDROGEN_H_
-#define V8_HYDROGEN_H_
+#ifndef V8_CRANKSHAFT_HYDROGEN_H_
+#define V8_CRANKSHAFT_HYDROGEN_H_
 
 #include "src/accessors.h"
 #include "src/allocation.h"
 #include "src/ast.h"
 #include "src/bailout-reason.h"
 #include "src/compiler.h"
-#include "src/hydrogen-instructions.h"
+#include "src/crankshaft/hydrogen-instructions.h"
 #include "src/scopes.h"
 #include "src/zone.h"
 
@@ -3077,4 +3077,4 @@ class NoObservableSideEffectsScope final {
 }  // namespace internal
 }  // namespace v8
 
-#endif  // V8_HYDROGEN_H_
+#endif  // V8_CRANKSHAFT_HYDROGEN_H_