Move Hydrogen and Lithium to src/crankshaft/

src/crankshaft/x64/lithium-gap-resolver-x64.h

Index: src/crankshaft/x64/lithium-gap-resolver-x64.h
diff --git a/src/x64/lithium-gap-resolver-x64.h b/src/crankshaft/x64/lithium-gap-resolver-x64.h
similarity index 85%
rename from src/x64/lithium-gap-resolver-x64.h
rename to src/crankshaft/x64/lithium-gap-resolver-x64.h
index db1a4ac2a9a2641476748d11ddfa748b848adf6c..641f0ee69f7a9dcbe809ca4c4e0e2ecfa2f4bb42 100644
--- a/src/x64/lithium-gap-resolver-x64.h
+++ b/src/crankshaft/x64/lithium-gap-resolver-x64.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_X64_LITHIUM_GAP_RESOLVER_X64_H_
-#define V8_X64_LITHIUM_GAP_RESOLVER_X64_H_
+#ifndef V8_CRANKSHAFT_X64_LITHIUM_GAP_RESOLVER_X64_H_
+#define V8_CRANKSHAFT_X64_LITHIUM_GAP_RESOLVER_X64_H_
 
-#include "src/lithium.h"
+#include "src/crankshaft/lithium.h"
 
 namespace v8 {
 namespace internal {
@@ -47,4 +47,4 @@ class LGapResolver final BASE_EMBEDDED {
 }  // namespace internal
 }  // namespace v8
 
-#endif  // V8_X64_LITHIUM_GAP_RESOLVER_X64_H_
+#endif  // V8_CRANKSHAFT_X64_LITHIUM_GAP_RESOLVER_X64_H_