Fix http requests and the crash dump RPC

runtime/observatory/tests/service/test_helper.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.
 
 library test_helper;
 
 import 'dart:async';
 import 'dart:convert';
 import 'dart:io';
 import 'package:observatory/service_io.dart';
@@ skipping 68 matching lines @@
     print('** Killing script');
     if (process.kill()) {
       killedByTester = true;
     }
   }
 }
 
 typedef Future IsolateTest(Isolate isolate);
 typedef Future VMTest(VM vm);
 
+/// Will be set to the http address of the VM's service protocol before
+/// any tests are invoked.
+String serviceHttpAddress;
+
 /// Runs [tests] in sequence, each of which should take an [Isolate] and
 /// return a [Future]. Code for setting up state can run before and/or
 /// concurrently with the tests. Uses [mainArgs] to determine whether
 /// to run tests or testee in this invokation of the script.
 void runIsolateTests(List<String> mainArgs,
                      List<IsolateTest> tests,
                      {void testeeBefore(),
                       void testeeConcurrent(),
                       bool pause_on_exit}) {
   if (mainArgs.contains(_TESTEE_MODE_FLAG)) {
     if (testeeBefore != null) {
       testeeBefore();
     }
     print(''); // Print blank line to signal that we are ready.
     if (testeeConcurrent != null) {
       testeeConcurrent();
     }
     // Wait around for the process to be killed.
     stdin.first.then((_) => exit(0));
   } else {
     var process = new _TestLauncher();
     process.launch(pause_on_exit).then((port) {
       if (mainArgs.contains("--gdb")) {
         port = 8181;
       }
       String addr = 'ws://localhost:$port/ws';
+      serviceHttpAddress = 'http://localhost:$port';
       var testIndex = 1;
       var totalTests = tests.length;
       var name = Platform.script.pathSegments.last;
       runZoned(() {
         new WebSocketVM(new WebSocketVMTarget(addr)).load()
             .then((VM vm) => vm.isolates.first.load())
             .then((Isolate isolate) => Future.forEach(tests, (test) {
               print('Running $name [$testIndex/$totalTests]');
               testIndex++;
               return test(isolate);
@@ skipping 167 matching lines @@
     }
     // Wait around for the process to be killed.
     stdin.first.then((_) => exit(0));
   } else {
     var process = new _TestLauncher();
     process.launch(pause_on_exit).then((port) async {
       if (mainArgs.contains("--gdb")) {
         port = 8181;
       }
       String addr = 'ws://localhost:$port/ws';
+      serviceHttpAddress = 'http://localhost:$port';
       var testIndex = 1;
       var totalTests = tests.length;
       var name = Platform.script.pathSegments.last;
       runZoned(() {
         new WebSocketVM(new WebSocketVMTarget(addr)).load()
             .then((VM vm) => Future.forEach(tests, (test) {
               print('Running $name [$testIndex/$totalTests]');
               testIndex++;
               return test(vm);
             })).then((_) => process.requestExit());
       }, onError: (e, st) {
         process.requestExit();
         if (!_isWebSocketDisconnect(e)) {
           print('Unexpected exception in service tests: $e $st');
           throw e;
         }
       });
     });
   }
 }