Unify specification of file open, close, and write callbacks.

runtime/vm/heap.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_HEAP_H_
 #define VM_HEAP_H_
 
 #include "platform/assert.h"
 #include "vm/allocation.h"
 #include "vm/flags.h"
@@ skipping 139 matching lines @@
 
   // Print heap sizes.
   void PrintSizes() const;
 
   // Returns the [lowest, highest) addresses in the heap.
   void StartEndAddress(uword* start, uword* end) const;
 
   ObjectSet* CreateAllocatedObjectSet() const;
 
   // Generates a profile of the current and VM isolate heaps.
-  void Profile(Dart_HeapProfileWriteCallback callback, void* stream) const;
+  void Profile(Dart_FileWriteCallback callback, void* stream) const;
 
   static const char* GCReasonToString(GCReason gc_reason);
 
   // Associates a peer with an object.  If an object has a peer, it is
   // replaced.  A value of NULL disassociate an object from its peer.
   void SetPeer(RawObject* raw_obj, void* peer);
 
   // Retrieves the peer associated with an object.  Returns NULL if
   // there is no association.
   void* GetPeer(RawObject* raw_obj);
@@ skipping 32 matching lines @@
  public:
   NoGCScope() {}
  private:
   DISALLOW_COPY_AND_ASSIGN(NoGCScope);
 };
 #endif  // defined(DEBUG)
 
 }  // namespace dart
 
 #endif  // VM_HEAP_H_