Move MessageWriter from snapshot files to dart_api_message files

runtime/vm/snapshot.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_SNAPSHOT_H_
 #define VM_SNAPSHOT_H_
 
 #include "platform/assert.h"
 #include "vm/allocation.h"
 #include "vm/bitfield.h"
@@ skipping 449 matching lines @@
   }
   ~BaseWriter() { }
 
  private:
   WriteStream stream_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(BaseWriter);
 };
 
 
-class MessageWriter : public BaseWriter {
- public:
-  MessageWriter(uint8_t** buffer, ReAlloc alloc)
-      : BaseWriter(buffer, alloc), object_id_(0) {
-    ASSERT(kDartCObjectTypeMask >= Dart_CObject::kNumberOfTypes - 1);
-  }
-  ~MessageWriter() { }
-
-  // Writes a message of integers.
-  void WriteMessage(intptr_t field_count, intptr_t *data);
-
-  void WriteCMessage(Dart_CObject* object);
-
-  void FinalizeBuffer() {
-    BaseWriter::FinalizeBuffer(Snapshot::kMessage);
-  }
-
- private:
-  static const intptr_t kDartCObjectTypeBits = 4;
-  static const intptr_t kDartCObjectTypeMask = (1 << kDartCObjectTypeBits) - 1;
-  static const intptr_t kDartCObjectMarkMask = ~kDartCObjectTypeMask;
-  static const intptr_t kDartCObjectMarkOffset = 1;
-
-  void MarkCObject(Dart_CObject* object, intptr_t object_id);
-  void UnmarkCObject(Dart_CObject* object);
-  bool IsCObjectMarked(Dart_CObject* object);
-  intptr_t GetMarkedCObjectMark(Dart_CObject* object);
-  void UnmarkAllCObjects(Dart_CObject* object);
-
-  void WriteSmi(int64_t value);
-  void WriteMint(Dart_CObject* object, int64_t value);
-  void WriteInt32(Dart_CObject* object);
-  void WriteInt64(Dart_CObject* object);
-  void WriteInlinedHeader(Dart_CObject* object);
-  void WriteCObject(Dart_CObject* object);
-
-  intptr_t object_id_;
-
-  DISALLOW_COPY_AND_ASSIGN(MessageWriter);
-};
-
-
 class SnapshotWriter : public BaseWriter {
  public:
   SnapshotWriter(Snapshot::Kind kind, uint8_t** buffer, ReAlloc alloc)
       : BaseWriter(buffer, alloc),
         kind_(kind),
         object_store_(Isolate::Current()->object_store()),
         forward_list_() {
   }
   ~SnapshotWriter() { }
 
@@ skipping 74 matching lines @@
 
  private:
   SnapshotWriter* writer_;
 
   DISALLOW_COPY_AND_ASSIGN(SnapshotWriterVisitor);
 };
 
 }  // namespace dart
 
 #endif  // VM_SNAPSHOT_H_