Serializer: move to a subfolder and clean up includes.

src/arm64/assembler-arm64.h

 // Copyright 2013 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.
 
 #ifndef V8_ARM64_ASSEMBLER_ARM64_H_
 #define V8_ARM64_ASSEMBLER_ARM64_H_
 
 #include <deque>
 #include <list>
 #include <map>
 #include <vector>
 
 #include "src/arm64/instructions-arm64.h"
 #include "src/assembler.h"
 #include "src/compiler.h"
 #include "src/globals.h"
-#include "src/serialize.h"
 #include "src/utils.h"
 
 
 namespace v8 {
 namespace internal {
 
 
 // -----------------------------------------------------------------------------
 // Registers.
 #define REGISTER_CODE_LIST(R)                                                  \
@@ skipping 2292 matching lines @@
 class EnsureSpace BASE_EMBEDDED {
  public:
   explicit EnsureSpace(Assembler* assembler) {
     assembler->CheckBufferSpace();
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_ARM64_ASSEMBLER_ARM64_H_