Generalize volume configuration over all volumes.

ui/file_manager/file_manager/foreground/js/providers_model.js

Index: ui/file_manager/file_manager/foreground/js/providers_model.js
diff --git a/ui/file_manager/file_manager/foreground/js/providers_model.js b/ui/file_manager/file_manager/foreground/js/providers_model.js
index 49f3fe43cd9410b6bb0cd9102ddf68bf641bd9c3..9b4a937cab2fcc89d85ccb9760b8f3834c661735 100644
--- a/ui/file_manager/file_manager/foreground/js/providers_model.js
+++ b/ui/file_manager/file_manager/foreground/js/providers_model.js
@@ -145,15 +145,3 @@ ProvidersModel.prototype.requestMount = function(extensionId) {
             console.error(chrome.runtime.lastError.message);
       });
 };
-
-/**
- * @param {string} extensionId
- */
-ProvidersModel.prototype.requestConfigure = function(extensionId) {
-  chrome.fileManagerPrivate.configureProvidedFileSystem(
-      assert(extensionId),
-      function() {
-        if (chrome.runtime.lastError)
-            console.error(chrome.runtime.lastError.message);
-      });
-};