Rename the get* methods in preparation for removing them.

runtime/observatory/test/metrics_test.dart

 // Copyright (c) 2014, 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 'package:observatory/service_io.dart';
 import 'package:unittest/unittest.dart';
 import 'test_helper.dart';
 
 import 'dart:profiler';
 
 void script() {
   var counter = new Counter('a.b.c', 'description');
   Metrics.register(counter);
   counter.value = 1234.5;
 }
 
 var tests = [
 
 (Isolate isolate) =>
-  isolate.get('metrics').then((ServiceMap metrics) {
+  isolate.getDeprecated('metrics').then((ServiceMap metrics) {
     expect(metrics['type'], equals('MetricList'));
     var members = metrics['members'];
     expect(members, isList);
     expect(members.length, equals(1));
     var counter = members[0];
     expect(counter.name, equals('a.b.c'));
     expect(counter.value, equals(1234.5));
 }),
 
 (Isolate isolate) =>
-  isolate.get('metrics/a.b.c').then((ServiceMetric counter) {
+  isolate.getDeprecated('metrics/a.b.c').then((ServiceMetric counter) {
     expect(counter.name, equals('a.b.c'));
     expect(counter.value, equals(1234.5));
 }),
 
 (Isolate isolate) =>
-  isolate.get('metrics/a.b.d').then((DartError err) {
+  isolate.getDeprecated('metrics/a.b.d').then((DartError err) {
     expect(err is DartError, isTrue);
 }),
 
 ];
 
 main(args) => runIsolateTests(args, tests, testeeBefore: script);