Avoid NOTREACHED in content settings bubble.

chrome/browser/ui/views/content_setting_bubble_contents.cc

Index: chrome/browser/ui/views/content_setting_bubble_contents.cc
diff --git a/chrome/browser/ui/views/content_setting_bubble_contents.cc b/chrome/browser/ui/views/content_setting_bubble_contents.cc
index a24101ee4598433ad3e0e96ff32484a43b9fa6f1..0ed18bd5296d27a26212ac106eb55f49ae2bff47 100644
--- a/chrome/browser/ui/views/content_setting_bubble_contents.cc
+++ b/chrome/browser/ui/views/content_setting_bubble_contents.cc
@@ -324,7 +324,9 @@ void ContentSettingBubbleContents::Init() {
           !(i->second.disabled || model->GetDevices().empty()));
       combobox->set_listener(this);
       combobox->SetSelectedIndex(
-          model->GetDeviceIndex(i->second.selected_device));
+          model->GetDevices().empty()
+              ? 0
+              : model->GetDeviceIndex(i->second.selected_device));
       layout->AddView(combobox);
 
       bubble_content_empty = false;