Remove knowledge of USB devices from permission prompt implementations.

extensions/browser/api/usb/usb_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 "chrome/browser/extensions/extension_apitest.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/test/test_utils.h"
 #include "device/usb/usb_service.h"
 #include "extensions/browser/api/device_permissions_prompt.h"
 #include "extensions/browser/api/usb/usb_api.h"
@@ skipping 36 matching lines @@
 class TestDevicePermissionsPrompt
     : public DevicePermissionsPrompt,
       public DevicePermissionsPrompt::Prompt::Observer {
  public:
   TestDevicePermissionsPrompt(content::WebContents* web_contents)
       : DevicePermissionsPrompt(web_contents) {}
 
   void ShowDialog() override { prompt()->SetObserver(this); }
 
   void OnDevicesChanged() override {
-    std::vector<scoped_refptr<UsbDevice>> devices;
     for (size_t i = 0; i < prompt()->GetDeviceCount(); ++i) {
       prompt()->GrantDevicePermission(i);
-      devices.push_back(prompt()->GetDevice(i));
       if (!prompt()->multiple()) {
         break;
       }
     }
-    delegate()->OnUsbDevicesChosen(devices);
+    prompt()->Dismissed();
   }
 };
 
 class TestExtensionsAPIClient : public ShellExtensionsAPIClient {
  public:
   TestExtensionsAPIClient() : ShellExtensionsAPIClient() {}
 
   scoped_ptr<DevicePermissionsPrompt> CreateDevicePermissionsPrompt(
       content::WebContents* web_contents) const override {
     return make_scoped_ptr(new TestDevicePermissionsPrompt(web_contents));
@@ skipping 262 matching lines @@
 
   TestExtensionsAPIClient test_api_client;
   ASSERT_TRUE(LoadApp("api_test/usb/get_user_selected_devices"));
   ASSERT_TRUE(ready_listener.WaitUntilSatisfied());
 
   mock_service_->NotifyDeviceRemoved(mock_device_);
   ASSERT_TRUE(result_listener.WaitUntilSatisfied());
 }
 
 }  // namespace extensions