Add browser tests for USB device add/remove events.

extensions/browser/api/hid/hid_apitest.cc

 // Copyright 2014 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 "base/bind.h"
 #include "base/run_loop.h"
 #include "base/thread_task_runner_handle.h"
 #include "device/hid/hid_collection_info.h"
 #include "device/hid/hid_connection.h"
 #include "device/hid/hid_device_info.h"
@@ skipping 186 matching lines @@
 }
 
 IN_PROC_BROWSER_TEST_F(HidApiTest, OnDeviceRemoved) {
   ExtensionTestMessageListener load_listener("loaded", false);
   ExtensionTestMessageListener result_listener("success", false);
   result_listener.set_failure_message("failure");
 
   ASSERT_TRUE(LoadApp("api_test/hid/remove_event"));
   ASSERT_TRUE(load_listener.WaitUntilSatisfied());
 
-  // Device C was not returned by chrome.usb.getDevices, the app will not get
+  // Device C was not returned by chrome.hid.getDevices, the app will not get
   // a notification.
   hid_service_->RemoveDevice("C");
   // Device A was returned, the app will get a notification.
   hid_service_->RemoveDevice("A");
   ASSERT_TRUE(result_listener.WaitUntilSatisfied());
   EXPECT_EQ("success", result_listener.message());
 }
 
 }  // namespace extensions