Implement async file API on top of isolates.

runtime/bin/builtin_in.cc

 // Copyright (c) 2011, 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 <stdlib.h>
 #include <string.h>
 
 #include "include/dart_api.h"
 
 #include "bin/builtin.h"
@@ skipping 10 matching lines @@
 
 // List all native functions implemented in standalone dart that is used
 // to inject additional functionality e.g: Logger, file I/O, socket I/O etc.
 #define BUILTIN_NATIVE_LIST(V)                                                 \
   V(Logger_PrintString, 1)                                                     \
   V(Exit, 1)                                                                   \
   V(Directory_List, 7)                                                         \
   V(Directory_Exists, 2)                                                       \
   V(Directory_Create, 2)                                                       \
   V(Directory_Delete, 2)                                                       \
-  V(File_OpenFile, 3)                                                          \
-  V(File_Exists, 2)                                                            \
+  V(File_Open, 2)                                                              \
+  V(File_Exists, 1)                                                            \
   V(File_Close, 1)                                                             \
   V(File_ReadByte, 1)                                                          \
   V(File_WriteByte, 2)                                                         \
   V(File_WriteString, 2)                                                       \
   V(File_ReadList, 4)                                                          \
-  V(File_WriteList , 4)                                                        \
+  V(File_WriteList, 4)                                                         \
   V(File_Position, 1)                                                          \
   V(File_Length, 1)                                                            \
   V(File_Flush, 1)                                                             \
   V(EventHandler_Start, 1)                                                     \
   V(EventHandler_SendData, 4)                                                  \
   V(Process_Start, 8)                                                          \
   V(Process_Kill, 2)                                                           \
   V(Process_Exit, 2)                                                           \
   V(Socket_CreateConnect, 3)                                                   \
   V(Socket_Available, 1)                                                       \
@@ skipping 88 matching lines @@
 }
 
 
 void Builtin_SetNativeResolver() {
   Dart_Handle url = Dart_NewString(DartUtils::kBuiltinLibURL);
   Dart_Handle builtin_lib = Dart_LookupLibrary(url);
   ASSERT(Dart_IsValid(builtin_lib));
   Dart_Handle result = Dart_SetNativeResolver(builtin_lib, native_lookup);
   ASSERT(Dart_IsValid(result));
 }