Remove knowledge of USB devices from permission prompt implementations.

chrome/browser/ui/cocoa/extensions/device_permissions_dialog_controller.mm

Index: chrome/browser/ui/cocoa/extensions/device_permissions_dialog_controller.mm
diff --git a/chrome/browser/ui/cocoa/extensions/device_permissions_dialog_controller.mm b/chrome/browser/ui/cocoa/extensions/device_permissions_dialog_controller.mm
index 351350942c6edf08412eb0432a4801a0276c6569..a83697202296b9bc133867d4522ade3d5ca4528c 100644
--- a/chrome/browser/ui/cocoa/extensions/device_permissions_dialog_controller.mm
+++ b/chrome/browser/ui/cocoa/extensions/device_permissions_dialog_controller.mm
@@ -18,12 +18,11 @@ using extensions::DevicePermissionsPrompt;
 
 DevicePermissionsDialogController::DevicePermissionsDialogController(
     content::WebContents* web_contents,
-    DevicePermissionsPrompt::Delegate* delegate,
     scoped_refptr<DevicePermissionsPrompt::Prompt> prompt)
-    : delegate_(delegate), prompt_(prompt) {
+    : prompt_(prompt) {
   view_controller_.reset(
-      [[DevicePermissionsViewController alloc] initWithDelegate:this
-                                                         prompt:prompt]);
+      [[DevicePermissionsViewController alloc] initWithController:this
+                                                           prompt:prompt]);
 
   prompt_->SetObserver(this);
 
@@ -41,10 +40,7 @@ DevicePermissionsDialogController::~DevicePermissionsDialogController() {
   prompt_->SetObserver(nullptr);
 }
 
-void DevicePermissionsDialogController::OnUsbDevicesChosen(
-    const std::vector<scoped_refptr<device::UsbDevice>>& devices) {
-  delegate_->OnUsbDevicesChosen(devices);
-  delegate_ = nullptr;
+void DevicePermissionsDialogController::Dismissed() {
   constrained_window_->CloseWebContentsModalDialog();
 }
 
@@ -54,14 +50,11 @@ void DevicePermissionsDialogController::OnDevicesChanged() {
 
 void DevicePermissionsDialogController::OnConstrainedWindowClosed(
     ConstrainedWindowMac* window) {
-  if (delegate_) {
-    std::vector<scoped_refptr<device::UsbDevice>> empty;
-    delegate_->OnUsbDevicesChosen(empty);
-  }
+  prompt_->Dismissed();
   base::ThreadTaskRunnerHandle::Get()->DeleteSoon(FROM_HERE, this);
 }
 
 void ChromeDevicePermissionsPrompt::ShowDialog() {
   // These objects will delete themselves when the dialog closes.
-  new DevicePermissionsDialogController(web_contents(), delegate(), prompt());
+  new DevicePermissionsDialogController(web_contents(), prompt());
 }