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

runtime/vm/heap.cc

 // 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.
 
 #include "vm/heap.h"
 
 #include "platform/assert.h"
 #include "platform/utils.h"
 #include "vm/flags.h"
 #include "vm/heap_profiler.h"
@@ skipping 249 matching lines @@
 
 
 void Heap::PrintSizes() const {
   OS::PrintErr("New space (%"Pd"k of %"Pd"k) "
                "Old space (%"Pd"k of %"Pd"k)\n",
                (new_space_->in_use() / KB), (new_space_->capacity() / KB),
                (old_space_->in_use() / KB), (old_space_->capacity() / KB));
 }
 
 
-void Heap::Profile(Dart_HeapProfileWriteCallback callback, void* stream) const {
+void Heap::Profile(Dart_FileWriteCallback callback, void* stream) const {
   HeapProfiler profiler(callback, stream);
 
   // Dump the root set.
   HeapProfilerRootVisitor root_visitor(&profiler);
   Isolate* isolate = Isolate::Current();
   Isolate* vm_isolate = Dart::vm_isolate();
   isolate->VisitObjectPointers(&root_visitor, false,
                                StackFrameIterator::kDontValidateFrames);
   HeapProfilerWeakRootVisitor weak_root_visitor(&root_visitor);
   isolate->VisitWeakPersistentHandles(&weak_root_visitor, true);
@@ skipping 57 matching lines @@
   isolate()->IncrementNoGCScopeDepth();
 }
 
 
 NoGCScope::~NoGCScope() {
   isolate()->DecrementNoGCScopeDepth();
 }
 #endif  // defined(DEBUG)
 
 }  // namespace dart