Remove unused chrome.screenlockPrivate methods

chrome/common/extensions/api/screenlock_private.idl

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Control and monitor the screen locker.
 [permissions=screenlockPrivate, nodoc]
 namespace screenlockPrivate {
   // Supported authentication types shown on the user pod.
   // |offlinePassword|: The standard password field, which authenticates using
   //                   the user's regular password. The $(ref:onAuthAttempted)()
   //                   event will not be fired for this authentication type.
   // |numericPin|: An input field for a 4 digit numeric pin code.
   // |userClick|: Makes the user pod clickable when it is focused, and
   //                 clicking on it attempts the authentication. If |value| is
   //                 specified with $(ref:setAuthType)(), the text is displayed
   //                 in the password field.
   enum AuthType {offlinePassword, numericPin, userClick};
 
-  // Extension resource for a icon representation for a scale factor.
-  dictionary IconRepresentation {
-    // The scale factor the representation is for.
-    double scaleFactor;
-    // The image resource URL.
-    DOMString url;
-  };
-
   callback BooleanCallback = void(boolean locked);
-  callback AuthTypeCallback = void(AuthType authType);
 
   interface Functions {
     // Returns true if the screen is currently locked, false otherwise.
     static void getLocked(BooleanCallback callback);
 
     // Set <code>locked=true</code> to lock the screen,
     // <code>locked=false</code> to unlock it.
     static void setLocked(boolean locked);
 
-    // Show a message to the user on the unlock UI if the screen is locked.
-    static void showMessage(DOMString message);
-
-    // Show a custom icon beside the input field on the user pod.
-    // |icon|: Extension resoucres for the icon's multi-scale representations.
-    //     Currently, only scales 1 and 2 are supported. The list must have a
-    //     resource for at least scale 1.
-    static void showCustomIcon(IconRepresentation[] icon);
-
-    // Hides the custom icon added by $(ref:showCustomIcon)().
-    static void hideCustomIcon();
-
-    // Returns the current auth type used for the user pod.
-    static void getAuthType(AuthTypeCallback callback);
-
-    // Set the type of the authentication for the user pod. The input field
-    // area of the user pod below the user's portrait will be changed.
-    // |authType|: The type of authentication to use.
-    // |initialValue|: The initial value to populate the input field.
-    static void setAuthType(AuthType authType, optional DOMString initialValue);
-
     // Accepts or rejects the current auth attempt.
     static void acceptAuthAttempt(boolean accept);
   };
 
   interface Events {
     // Fires whenever the screen is locked or unlocked.
     static void onChanged(boolean locked);
 
     // Fires when the user attempts to authenticate with the user's input.
     // There will be at most one auth attempt active at any time.
     // Call $(ref:acceptAuthAttempt)() to accept or reject this attempt.
     // Note: Some authentication types will not have an input.
     static void onAuthAttempted(AuthType type, DOMString input);
   };
 };