Revert 22380 to investigate windows build break.

runtime/vm/dart_api_impl.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 "include/dart_api.h"
 
 #include "platform/assert.h"
 #include "vm/bigint_operations.h"
 #include "vm/class_finalizer.h"
 #include "vm/compiler.h"
@@ skipping 727 matching lines @@
 DART_EXPORT const char* Dart_VersionString() {
   return Version::String();
 }
 
 DART_EXPORT bool Dart_Initialize(
     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) {
   const char* err_msg = Dart::InitOnce(create, interrupt, unhandled, shutdown,
-                                       file_open, file_read, file_write,
-                                       file_close);
+                                       file_open, file_write, file_close);
   if (err_msg != NULL) {
     OS::PrintErr("Dart_Initialize: %s\n", err_msg);
     return false;
   }
   return true;
 }
 
 DART_EXPORT bool Dart_SetVMFlags(int argc, const char** argv) {
   return Flags::ProcessCommandLineFlags(argc, argv);
 }
@@ skipping 4084 matching lines @@
   }
   {
     NoGCScope no_gc;
     RawObject* raw_obj = obj.raw();
     isolate->heap()->SetPeer(raw_obj, peer);
   }
   return Api::Success(isolate);
 }
 
 }  // namespace dart