One-time JS cleanup for cr_elements

R=stevenjb@chromium.org, jlklein@chromium.org

Review URL: https://codereview.chromium.org/987433007

Cr-Commit-Position: refs/heads/master@{#320868}

ui/webui/resources/cr_elements/cr_button/cr_button.js

-/* Copyright 2015 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. */
+// Copyright 2015 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

ui/webui/resources/cr_elements/cr_checkbox/cr_checkbox.js

-/* Copyright 2015 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. */
+// Copyright 2015 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

ui/webui/resources/cr_elements/cr_collapse/cr_collapse.js

-/* Copyright 2015 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. */
+// Copyright 2015 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

ui/webui/resources/cr_elements/cr_events/cr_events.js

-/* Copyright 2015 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. */
+// Copyright 2015 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
@@ -28,7 +28,6 @@ Polymer({
       element.addEventListener(events[i], this.forwardEvent_);
   },
 
-
   /**
    * Forwards events that don't automatically cross the shadow boundary
    * if the event should bubble.

ui/webui/resources/cr_elements/cr_input/cr_input.js

-/* Copyright 2015 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. */
+// Copyright 2015 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

ui/webui/resources/cr_elements/cr_network_icon/cr_network_icon_externs.js

@@ -13,14 +13,11 @@
 /** @constructor @extends {HTMLElement} */
 var CrNetworkIconElement = function() {};
 
-
 /** @type {CrOncDataElement} */
 CrNetworkIconElement.prototype.networkState;
 
-
 /** @type {CrOnc.Type} */
 CrNetworkIconElement.prototype.networkType;
 
-
 /** @type {boolean} */
 CrNetworkIconElement.prototype.isListItem;

ui/webui/resources/cr_elements/cr_onc/cr_onc_data_externs.js

@@ -10,10 +10,8 @@
  * @externs
  */
 
-
 /** @constructor @extends {HTMLElement} */
 var CrOncDataElement = function() {};
 
-
 /** @type {CrOnc.NetworkConfigType} */
 CrOncDataElement.prototype.data;

ui/webui/resources/cr_elements/cr_onc/cr_onc_types.js

@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-
 /**
  * @fileoverview Typedefs for CrOncDataElement.data. Note: These 'types' define
  * a subset of ONC properties in the ONC data dictionary. The first letter is

ui/webui/resources/cr_elements/cr_toggle_button/cr_toggle_button.js

-/* Copyright 2015 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. */
+// Copyright 2015 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
@@ -27,7 +27,6 @@ Polymer({
       reflect: true,
     },
 
-
     /**
      * If true, the toggle button is disabled.
      *