Pass full Mojo USB DeviceInfo object with removal notifications.

device/devices_app/usb/device_manager_impl_unittest.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <set>
 #include <string>
 
 #include "base/bind.h"
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 108 matching lines @@
     const base::Closure& continuation,
     DeviceChangeNotificationPtr results) {
   EXPECT_EQ(expected_added_guids.size(), results->devices_added.size());
   std::set<std::string> actual_added_guids;
   for (size_t i = 0; i < results->devices_added.size(); ++i)
     actual_added_guids.insert(results->devices_added[i]->guid);
   EXPECT_EQ(expected_added_guids, actual_added_guids);
   EXPECT_EQ(expected_removed_guids.size(), results->devices_removed.size());
   std::set<std::string> actual_removed_guids;
   for (size_t i = 0; i < results->devices_removed.size(); ++i)
-    actual_removed_guids.insert(results->devices_removed[i]);
+    actual_removed_guids.insert(results->devices_removed[i]->guid);
   EXPECT_EQ(expected_removed_guids, actual_removed_guids);
   continuation.Run();
 }
 
 void ExpectDeviceInfoAndThen(const std::string& expected_guid,
                              const base::Closure& continuation,
                              DeviceInfoPtr device_info) {
   EXPECT_EQ(expected_guid, device_info->guid);
   continuation.Run();
 }
@@ skipping 142 matching lines @@
     base::RunLoop loop;
     device_manager->GetDeviceChanges(base::Bind(&ExpectDeviceChangesAndThen,
                                                 added_guids, removed_guids,
                                                 loop.QuitClosure()));
     loop.Run();
   }
 }
 
 }  // namespace usb
 }  // namespace device