Fix cpu profile table

runtime/observatory/lib/src/elements/cpu_profile.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 cpu_profile_element;
 
 import 'dart:async';
 import 'dart:html';
 import 'observatory_element.dart';
 import 'package:observatory/service.dart';
@@ skipping 440 matching lines @@
       var response;
       if (allocationProfileClass != null) {
         response =
             await allocationProfileClass.getAllocationSamples(tagSelector);
       } else {
         var params = { 'tags': tagSelector };
         response = await isolate.invokeRpc('_getCpuProfile', params);
       }
       await _changeState(kLoadingState);
       profile.load(isolate, response);
+      profile.buildFunctionCallerAndCallees();
       _update(profile);
       await _changeState(kLoadedState);
       // Notify listener.
       onSampleBufferUpdate(profile);
       return profile;
     } catch (e, st) {
       if (e is ServerRpcException) {
         ServerRpcException se = e;
         if (se.code == ServerRpcException.kFeatureDisabled) {
           await _changeState(kDisabledState);
@@ skipping 718 matching lines @@
       return;
     }
     var tree = profile.loadCodeTree(exclusive ? 'exclusive' : 'inclusive');
     if (tree == null) {
       return;
     }
     var rootRow = new CodeProfileTreeRow(codeTree, null, profile, tree.root);
     codeTree.initialize(rootRow);
   }
 }