Revert 22380 to investigate windows build break.

runtime/vm/dart.cc

 // Copyright (c) 2013, 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/dart.h"
 
 #include "vm/code_observers.h"
 #include "vm/dart_api_state.h"
 #include "vm/dart_entry.h"
 #include "vm/flags.h"
@@ skipping 62 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(ReadOnlyHandles);
 };
 
 
 // TODO(turnidge): We should add a corresponding Dart::Cleanup.
 const char* Dart::InitOnce(Dart_IsolateCreateCallback create,
                            Dart_IsolateInterruptCallback interrupt,
                            Dart_IsolateUnhandledExceptionCallback unhandled,
                            Dart_IsolateShutdownCallback shutdown,
                            Dart_FileOpenCallback file_open,
-                           Dart_FileReadCallback file_read,
                            Dart_FileWriteCallback file_write,
                            Dart_FileCloseCallback file_close) {
   // TODO(iposva): Fix race condition here.
   if (vm_isolate_ != NULL || !Flags::Initialized()) {
     return "VM already initialized.";
   }
-  Isolate::SetFileCallbacks(file_open, file_read, file_write, file_close);
+  Isolate::SetFileCallbacks(file_open, file_write, file_close);
   OS::InitOnce();
   VirtualMemory::InitOnce();
   Isolate::InitOnce();
   PortMap::InitOnce();
   FreeListElement::InitOnce();
   Api::InitOnce();
   CodeObservers::InitOnce();
 #if defined(USING_SIMULATOR)
   Simulator::InitOnce();
 #endif
@@ skipping 147 matching lines @@
   return predefined_handles_->handles_.AllocateScopedHandle();
 }
 
 
 bool Dart::IsReadOnlyHandle(uword address) {
   ASSERT(predefined_handles_ != NULL);
   return predefined_handles_->handles_.IsValidScopedHandle(address);
 }
 
 }  // namespace dart