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

runtime/bin/process_unsupported.cc

 // Copyright (c) 2016, 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.
 
 #if defined(DART_IO_DISABLED)
 
 #include "bin/process.h"
 
 #include "bin/builtin.h"
 #include "bin/dartutils.h"
@@ skipping 74 matching lines @@
   Dart_ThrowException(
       DartUtils::NewInternalError("Process is not supported on this platform"));
 }
 
 
 void FUNCTION_NAME(StringToSystemEncoding)(Dart_NativeArguments args) {
   Dart_ThrowException(
       DartUtils::NewInternalError("Process is not supported on this platform"));
 }
 
+
+void FUNCTION_NAME(ProcessInfo_CurrentRSS)(Dart_NativeArguments args) {
+  Dart_ThrowException(
+      DartUtils::NewInternalError("Process is not supported on this platform"));
+}
+
+
+void FUNCTION_NAME(ProcessInfo_MaxRSS)(Dart_NativeArguments args) {
+  Dart_ThrowException(
+      DartUtils::NewInternalError("Process is not supported on this platform"));
+}
+
 }  // namespace bin
 }  // namespace dart
 
 #endif  // !defined(DART_IO_DISABLED)