Moved zones and zone related stuff in its own directory.

src/compiler/loop-peeling.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "src/compiler/loop-peeling.h"
 #include "src/compiler/common-operator.h"
 #include "src/compiler/graph.h"
-#include "src/compiler/loop-peeling.h"
-#include "src/compiler/node.h"
 #include "src/compiler/node-marker.h"
 #include "src/compiler/node-properties.h"
-#include "src/zone.h"
+#include "src/compiler/node.h"
+#include "src/zone/zone.h"
 
 // Loop peeling is an optimization that copies the body of a loop, creating
 // a new copy of the body called the "peeled iteration" that represents the
 // first iteration. Beginning with a loop as follows:
 
 //             E
 //             |                 A
 //             |                 |                     (backedges)
 //             | +---------------|---------------------------------+
 //             | | +-------------|-------------------------------+ |
@@ skipping 360 matching lines @@
           queue.push(control);
         }
       }
     }
   }
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8