Add dart:io view to the observatory.

runtime/vm/symbols.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_SYMBOLS_H_
 #define VM_SYMBOLS_H_
 
 #include "vm/object.h"
 #include "vm/snapshot_ids.h"
 
@@ skipping 274 matching lines @@
   V(DartCore, "dart:core")                                                     \
   V(DartCollection, "dart:collection")                                         \
   V(DartConvert, "dart:convert")                                               \
   V(DartInternal, "dart:_internal")                                            \
   V(DartIsolate, "dart:isolate")                                               \
   V(DartMath, "dart:math")                                                     \
   V(DartMirrors, "dart:mirrors")                                               \
   V(DartTypedData, "dart:typed_data")                                          \
   V(DartVMService, "dart:vmservice")                                           \
   V(DartProfiler, "dart:profiler")                                             \
+  V(DartIOLibName, "dart.io")                                                  \
   V(_Random, "_Random")                                                        \
   V(_state, "_state")                                                          \
   V(_A, "_A")                                                                  \
   V(_stackTrace, "_stackTrace")                                                \
   V(_SpecialTypeMirror, "_SpecialTypeMirror")                                  \
   V(_LocalClassMirror, "_LocalClassMirror")                                    \
   V(_LocalFunctionTypeMirror, "_LocalFunctionTypeMirror")                      \
   V(_LocalLibraryMirror, "_LocalLibraryMirror")                                \
   V(_LocalLibraryDependencyMirror, "_LocalLibraryDependencyMirror")            \
   V(_LocalCombinatorMirror, "_LocalCombinatorMirror")                          \
@@ skipping 230 matching lines @@
   friend class SnapshotReader;
   friend class SnapshotWriter;
   friend class ApiMessageReader;
 
   DISALLOW_COPY_AND_ASSIGN(Symbols);
 };
 
 }  // namespace dart
 
 #endif  // VM_SYMBOLS_H_