Make getBluetoothManualChooserEvents() asynchronous.

components/test_runner/web_test_delegate.h

 // Copyright 2013 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_TEST_RUNNER_WEB_TEST_DELEGATE_H_
 #define COMPONENTS_TEST_RUNNER_WEB_TEST_DELEGATE_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 148 matching lines @@
   virtual void SetDeviceColorProfile(const std::string& name) = 0;
 
   // Change the bluetooth test data while running a layout test.
   virtual void SetBluetoothMockDataSet(const std::string& data_set) = 0;
 
   // Makes the Bluetooth chooser record its input and wait for instructions from
   // the test program on how to proceed.
   virtual void SetBluetoothManualChooser() = 0;
 
   // Returns the events recorded since the last call to this function.
-  virtual std::vector<std::string> GetBluetoothManualChooserEvents() = 0;
+  virtual void GetBluetoothManualChooserEvents(
+      const base::Callback<void(const std::vector<std::string>& events)>&
+          callback) = 0;
 
   // Calls the BluetoothChooser::EventHandler with the arguments here. Valid
   // event strings are:
   //  * "cancel" - simulates the user canceling the chooser.
   //  * "select" - simulates the user selecting a device whose device ID is in
   //               |argument|.
   virtual void SendBluetoothManualChooserEvent(const std::string& event,
                                                const std::string& argument) = 0;
 
   // Enables mock geofencing service while running a layout test.
@@ skipping 85 matching lines @@
   virtual blink::WebPlugin* CreatePluginPlaceholder(
     blink::WebLocalFrame* frame,
     const blink::WebPluginParams& params) = 0;
 
   virtual void OnWebTestProxyBaseDestroy(WebTestProxyBase* proxy) = 0;
 };
 
 }  // namespace test_runner
 
 #endif  // COMPONENTS_TEST_RUNNER_WEB_TEST_DELEGATE_H_