Dismiss DevicePermissionsPrompt when the widgets are destroyed.

chrome/browser/ui/views/extensions/device_permissions_dialog_view.h

Index: chrome/browser/ui/views/extensions/device_permissions_dialog_view.h
diff --git a/chrome/browser/ui/views/extensions/device_permissions_dialog_view.h b/chrome/browser/ui/views/extensions/device_permissions_dialog_view.h
index e8bab2c0d1e9554e2e1a4f23a7805ed5adc86387..3b440fcc7bf8e3c729e40426d8db5725fa0e2f4d 100644
--- a/chrome/browser/ui/views/extensions/device_permissions_dialog_view.h
+++ b/chrome/browser/ui/views/extensions/device_permissions_dialog_view.h
@@ -22,8 +22,10 @@ class DevicePermissionsDialogView : public views::DialogDelegateView {
       scoped_refptr<extensions::DevicePermissionsPrompt::Prompt> prompt);
   ~DevicePermissionsDialogView() override;
 
+  // Overriding views::DialogDelegateView.

[Peter Kasting, 2015/04/20 21:33:33]

Nit: While here:

Since this class only subclasses views::DialogDelegateView, there should be just
one override section, headed "// views::DialogDelegateView:", and the methods in
it should be listed in the order in which they were declared within their base
classes, in the order in which the base classes themselves were declared.  In
this case, that would be this order:

GetDialogButtonLabel
GetModalType
GetWindowTitle
DeleteDelegate
Accept
GetPreferredSize

[Reilly Grant (use Gerrit), 2015/04/20 23:14:49]

Done.

+  void DeleteDelegate() override;
+
   // Overriding views::DialogDelegate.
-  bool Cancel() override;
   bool Accept() override;
 
   // Overriding views::DialogModel.