Converted Observatory cpu-profile element

runtime/observatory/tests/service/get_allocation_samples_test.dart

Index: runtime/observatory/tests/service/get_allocation_samples_test.dart
diff --git a/runtime/observatory/tests/service/get_allocation_samples_test.dart b/runtime/observatory/tests/service/get_allocation_samples_test.dart
index 85626ee47a9c8383ef1558c22d2e4d47b383263f..d26c75f4d135085bf15af323eb27cf30e51924c4 100644
--- a/runtime/observatory/tests/service/get_allocation_samples_test.dart
+++ b/runtime/observatory/tests/service/get_allocation_samples_test.dart
@@ -4,6 +4,7 @@
 // VMOptions=--error_on_bad_type --error_on_bad_override
 
 import 'dart:developer';
+import 'package:observatory/models.dart' as M;
 import 'package:observatory/service_io.dart';
 import 'package:observatory/cpu_profile.dart';
 import 'package:unittest/unittest.dart';
@@ -61,10 +62,10 @@ var tests = [
     await fooClass.reload();
     expect(fooClass.traceAllocations, isFalse);
     CpuProfile cpuProfile = new CpuProfile();
-    cpuProfile.load(isolate, profileResponse);
+    await cpuProfile.load(isolate, profileResponse);
     cpuProfile.buildCodeCallerAndCallees();
     cpuProfile.buildFunctionCallerAndCallees();
-    var tree = cpuProfile.loadCodeTree('exclusive');
+    var tree = cpuProfile.loadCodeTree(M.ProfileTreeDirection.exclusive);
     var node = tree.root;
     var expected =
         ['Root', 'DRT_AllocateObject', 'test', 'test', '_Closure.call'];