Update app info and install prompt UI to show retained devices.

chrome/browser/ui/webui/extensions/extension_settings_handler.cc

Index: chrome/browser/ui/webui/extensions/extension_settings_handler.cc
diff --git a/chrome/browser/ui/webui/extensions/extension_settings_handler.cc b/chrome/browser/ui/webui/extensions/extension_settings_handler.cc
index 20e6b3fc28c78ee2ae84cc5f6392652a0eedeb38..d54682368ae574260697a41bacce0b9a998f2cb1 100644
--- a/chrome/browser/ui/webui/extensions/extension_settings_handler.cc
+++ b/chrome/browser/ui/webui/extensions/extension_settings_handler.cc
@@ -5,6 +5,7 @@
 #include "chrome/browser/ui/webui/extensions/extension_settings_handler.h"
 
 #include "apps/app_load_service.h"
+#include "apps/saved_devices_service.h"
 #include "apps/saved_files_service.h"
 #include "base/auto_reset.h"
 #include "base/base64.h"
@@ -796,9 +797,10 @@ void ExtensionSettingsHandler::ExtensionWarningsChanged() {
   MaybeUpdateAfterNotification();
 }
 
-// This is called when the user clicks "Revoke File Access."
+// This is called when the user clicks "Revoke File/Device Access."
 void ExtensionSettingsHandler::InstallUIProceed() {
   Profile* profile = Profile::FromWebUI(web_ui());
+  apps::SavedDevicesService::Get(profile)->Clear(extension_id_prompting_);
   apps::SavedFilesService::Get(profile)->ClearQueue(
       extension_service_->GetExtensionById(extension_id_prompting_, true));
   apps::AppLoadService::Get(profile)
@@ -1162,9 +1164,18 @@ void ExtensionSettingsHandler::HandlePermissionsMessage(
       retained_file_paths.push_back(retained_file_entries[i].path);
     }
   }
+  std::vector<base::string16> retained_device_messages;
+  if (extension->permissions_data()->HasAPIPermission(APIPermission::kUsb)) {
+    retained_device_messages =
+        apps::SavedDevicesService::Get(Profile::FromWebUI(web_ui()))
+            ->GetPermissionMessageStrings(extension_id_prompting_);
+  }
+
   // The BrokerDelegate manages its own lifetime.
-  prompt_->ReviewPermissions(
-      new BrokerDelegate(AsWeakPtr()), extension, retained_file_paths);
+  prompt_->ReviewPermissions(new BrokerDelegate(AsWeakPtr()),
+                             extension,
+                             retained_file_paths,
+                             retained_device_messages);
 }
 
 void ExtensionSettingsHandler::HandleShowButtonMessage(