1 files changed, 0 insertions, 140 deletions
diff --git a/chromium/chrome/browser/resources/chromeos/login/screen_context.js b/chromium/chrome/browser/resources/chromeos/login/screen_context.js
deleted file mode 100644
index fe1758cb40c..00000000000
--- a/chromium/chrome/browser/resources/chromeos/login/screen_context.js
+++ /dev/null
@@ -1,140 +0,0 @@
-// Copyright (c) 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.
-
-/**
- * @fileoverview Implementation of ScreenContext class: key-value storage for
- * values that are shared between C++ and JS sides.
- */
-cr.define('login', function() {
-  'use strict';
-
-  function require(condition, message) {
-    if (!condition) {
-      throw Error(message);
-    }
-  }
-
-  function checkKeyIsValid(key) {
-    var keyType = typeof key;
-    require(keyType === 'string', 'Invalid type of key: "' + keyType + '".');
-  }
-
-  function checkValueIsValid(value) {
-    var valueType = typeof value;
-    require((['string', 'boolean', 'number'].indexOf(valueType) != -1 ||
-             Array.isArray(value)),
-            'Invalid type of value: "' + valueType + '".');
-  }
-
-  function ScreenContext() {
-    this.storage_ = {};
-    this.changes_ = {};
-    this.observers_ = {};
-  }
-
-  ScreenContext.prototype = {
-    /**
-     * Returns stored value for |key| or |defaultValue| if key not found in
-     * storage. Throws Error if key not found and |defaultValue| omitted.
-     */
-    get: function(key, defaultValue) {
-      checkKeyIsValid(key);
-      if (this.hasKey(key)) {
-        return this.storage_[key];
-      } else if (typeof defaultValue !== 'undefined') {
-        return defaultValue;
-      } else {
-        throw Error('Key "' + key + '" not found.');
-      }
-    },
-
-    /**
-     * Sets |value| for |key|. Returns true if call changes state of context,
-     * false otherwise.
-     */
-    set: function(key, value) {
-      checkKeyIsValid(key);
-      checkValueIsValid(value);
-      if (this.hasKey(key) && this.storage_[key] === value)
-        return false;
-      this.changes_[key] = value;
-      this.storage_[key] = value;
-      return true;
-    },
-
-    hasKey: function(key) {
-      checkKeyIsValid(key);
-      return this.storage_.hasOwnProperty(key);
-    },
-
-    hasChanges: function() {
-      return Object.keys(this.changes_).length > 0;
-    },
-
-    /**
-     * Applies |changes| to context. Returns Array of changed keys' names.
-     */
-    applyChanges: function(changes) {
-      require(!this.hasChanges(), 'Context has changes.');
-      var oldValues = {};
-      for (var key in changes) {
-        checkKeyIsValid(key);
-        checkValueIsValid(changes[key]);
-        oldValues[key] = this.storage_[key];
-        this.storage_[key] = changes[key];
-      }
-      var observers = this.cloneObservers_();
-      for (var key in changes) {
-        if (observers.hasOwnProperty(key)) {
-          var keyObservers = observers[key];
-          for (var observerIndex in keyObservers)
-            keyObservers[observerIndex](changes[key], oldValues[key], key);
-        }
-      }
-      return Object.keys(changes);
-    },
-
-    /**
-     * Returns changes made on context since previous call.
-     */
-    getChangesAndReset: function() {
-      var result = this.changes_;
-      this.changes_ = {};
-      return result;
-    },
-
-    addObserver: function(key, observer) {
-      if (!this.observers_.hasOwnProperty(key))
-        this.observers_[key] = [];
-      if (this.observers_[key].indexOf(observer) !== -1) {
-        console.warn('Observer already registered.');
-        return;
-      }
-      this.observers_[key].push(observer);
-    },
-
-    removeObserver: function(observer) {
-      for (var key in this.observers_) {
-        var observerIndex = this.observers_[key].indexOf(observer);
-        if (observerIndex != -1)
-          this.observers_[key].splice(observerIndex, 1);
-      }
-    },
-
-    /**
-     * Creates deep copy of observers lists.
-     * @private
-     */
-    cloneObservers_: function() {
-      var result = {};
-      for (var key in this.observers_)
-        result[key] = this.observers_[key].slice();
-      return result;
-    }
-  };
-
-  return {
-    ScreenContext: ScreenContext
-  };
-});