Make getBluetoothManualChooserEvents() asynchronous.

components/html_viewer/web_test_delegate_impl.h

 // 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.
 
 #ifndef COMPONENTS_HTML_VIEWER_WEB_TEST_DELEGATE_IMPL_H_
 #define COMPONENTS_HTML_VIEWER_WEB_TEST_DELEGATE_IMPL_H_
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "components/test_runner/test_preferences.h"
@@ skipping 57 matching lines @@
   void CloseDevTools() override;
   void EvaluateInWebInspector(long call_id, const std::string& script) override;
   void ClearAllDatabases() override;
   void SetDatabaseQuota(int quota) override;
   void SimulateWebNotificationClick(const std::string& title,
                                     int action_index) override;
   void SetDeviceScaleFactor(float factor) override;
   void SetDeviceColorProfile(const std::string& name) override;
   void SetBluetoothMockDataSet(const std::string& data_set) override;
   void SetBluetoothManualChooser() override;
-  std::vector<std::string> GetBluetoothManualChooserEvents() override;
+  void GetBluetoothManualChooserEvents(
+      const base::Callback<void(const std::vector<std::string>&)>& callback)
+      override;
   void SendBluetoothManualChooserEvent(const std::string& event,
                                        const std::string& argument) override;
   void SetGeofencingMockProvider(bool service_available) override;
   void ClearGeofencingMockProvider() override;
   void SetGeofencingMockPosition(double latitude, double longitude) override;
   void SetFocus(test_runner::WebTestProxyBase* proxy, bool focus) override;
   void SetAcceptAllCookies(bool accept) override;
   std::string PathToLocalResource(const std::string& resource) override;
   void SetLocale(const std::string& locale) override;
   void TestFinished() override;
@@ skipping 33 matching lines @@
   test_runner::WebTestInterfaces* test_interfaces_;
   test_runner::WebTestProxyBase* proxy_;
   base::Closure completion_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(WebTestDelegateImpl);
 };
 
 }  // namespace html_viewer
 
 #endif  // COMPONENTS_HTML_VIEWER_WEB_TEST_DELEGATE_IMPL_H_