Add class and address information to heap map; display on hover.

runtime/vm/service_test.cc

 // 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.
 
 #include "include/dart_debugger_api.h"
 #include "vm/dart_api_impl.h"
 #include "vm/dart_entry.h"
 #include "vm/debugger.h"
 #include "vm/globals.h"
 #include "vm/message_handler.h"
@@ skipping 983 matching lines @@
   Dart_Handle port =
       Api::NewHandle(isolate, DartLibraryCalls::NewSendPort(port_id));
   EXPECT_VALID(port);
   EXPECT_VALID(Dart_SetField(lib, NewString("port"), port));
 
   Instance& service_msg = Instance::Handle();
   service_msg = Eval(lib, "[port, ['heapmap'], [], []]");
   Service::HandleIsolateMessage(isolate, service_msg);
   handler.HandleNextMessage();
   EXPECT_SUBSTRING("\"type\":\"HeapMap\"", handler.msg());
-  EXPECT_SUBSTRING("\"pages\":[[", handler.msg());
-  EXPECT_SUBSTRING("]]", handler.msg());
+  EXPECT_SUBSTRING("\"pages\":[", handler.msg());
 }
 
 
 static const char* alpha_callback(
     const char* name,
     const char** arguments,
     intptr_t num_arguments,
     const char** option_keys,
     const char** option_values,
     intptr_t num_options,
@@ skipping 85 matching lines @@
   Service::HandleIsolateMessage(isolate, service_msg);
   handler.HandleNextMessage();
   EXPECT_STREQ("alpha", handler.msg());
   service_msg = Eval(lib, "[port, ['beta'], [], []]");
   Service::HandleIsolateMessage(isolate, service_msg);
   handler.HandleNextMessage();
   EXPECT_STREQ("beta", handler.msg());
 }
 
 }  // namespace dart