[dart:io] Adds ProcessInfo.{max,current}Rss. Adds OS::MaxRSS on Fuchsia.

pkg/dev_compiler/tool/input_sdk/patch/io_patch.dart

 // 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.
 
 import 'dart:_js_helper' show patch;
 
 @patch
 class _Directory {
   @patch
   static _current() {
@@ skipping 273 matching lines @@
     throw new UnsupportedError("ProcessUtils._pid");
   }
 
   @patch
   static Stream<ProcessSignal> _watchSignal(ProcessSignal signal) {
     throw new UnsupportedError("ProcessUtils._watchSignal");
   }
 }
 
 @patch
+class ProcessInfo {
+  @patch
+  static int get currentRss {
+    throw new UnsupportedError("ProcessInfo.currentRss");
+  }
+
+  @patch
+  static int get maxRss {
+    throw new UnsupportedError("ProcessInfo.maxRss");
+  }
+}
+
+@patch
 class Process {
   @patch
   static Future<Process> start(String executable, List<String> arguments,
       {String workingDirectory,
       Map<String, String> environment,
       bool includeParentEnvironment: true,
       bool runInShell: false,
       ProcessStartMode mode: ProcessStartMode.NORMAL}) {
     throw new UnsupportedError("Process.start");
   }
@@ skipping 298 matching lines @@
   }
 }
 
 @patch
 class _IOService {
   @patch
   static Future _dispatch(int request, List data) {
     throw new UnsupportedError("_IOService._dispatch");
   }
 }