Introduce ZLibInflater and ZLibDeflater to dart:io.

runtime/bin/dartutils.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 BIN_DARTUTILS_H_
 #define BIN_DARTUTILS_H_
 
 #include "bin/builtin.h"
 #include "bin/utils.h"
 #include "include/dart_api.h"
@@ skipping 121 matching lines @@
                                                  const char* message);
   static Dart_Handle NewDartArgumentError(const char* message);
 
   // Create a new Dart String object from a C String.
   static Dart_Handle NewString(const char* str) {
     ASSERT(str != NULL);
     return Dart_NewStringFromUTF8(reinterpret_cast<const uint8_t*>(str),
                                   strlen(str));
   }
 
+  // Create a new Dart InternalError object with the provided message.
+  static Dart_Handle NewInternalError(const char* message);
+
   static void SetOriginalWorkingDirectory();
 
   static const char* MapLibraryUrl(CommandLineOptions* url_mapping,
                                    const char* url_string);
 
   static Dart_Handle ResolveScriptUri(Dart_Handle script_uri,
                                       Dart_Handle builtin_lib);
 
   static Dart_Handle FilePathFromUri(Dart_Handle script_uri,
                                      Dart_Handle builtin_lib);
@@ skipping 256 matching lines @@
   void* Peer() const { return cobject_->value.as_external_byte_array.peer; }
   Dart_WeakPersistentHandleFinalizer Callback() const {
     return cobject_->value.as_external_byte_array.callback;
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(CObjectExternalUint8Array);
 };
 
 #endif  // BIN_DARTUTILS_H_