[Cleanup] Files.app: Adds missing periods at the end of the descriptions.

chrome/browser/resources/file_manager/js/image_editor/viewport.js

 // Copyright (c) 2012 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.
 
 /**
  * Viewport class controls the way the image is displayed (scale, offset etc).
  * @constructor
  */
 function Viewport() {
   this.imageBounds_ = new Rect();
@@ skipping 59 matching lines @@
 Viewport.prototype.sizeByFrameAndFit = function(frame) {
   var wasFitting = this.getScale() == this.getFittingScale();
   this.sizeByFrame(frame);
   var minScale = this.getFittingScale();
   if (wasFitting || (this.getScale() < minScale)) {
     this.setScale(minScale, true);
   }
 };
 
 /**
- * @return {number} Scale
+ * @return {number} Scale.
  */
 Viewport.prototype.getScale = function() { return this.scale_ };
 
 /**
  * @param {number} scale The new scale.
  * @param {boolean} notify True if the change should be reflected in the UI.
  */
 Viewport.prototype.setScale = function(scale, notify) {
   if (this.scale_ == scale) return;
   this.scale_ = scale;
@@ skipping 100 matching lines @@
 
 /**
  * @return {Rect} The visible part of the image, in screen coordinates.
  */
 Viewport.prototype.getScreenClipped = function() { return this.screenClipped_ };
 
 /**
  * A counter that is incremented with each viewport state change.
  * Clients that cache anything that depends on the viewport state should keep
  * track of this counter.
- * @return {number} counter
+ * @return {number} counter.
  */
 Viewport.prototype.getCacheGeneration = function() { return this.generation_ };
 
 /**
  * Called on evert view port state change (even if repaint has not been called).
  */
 Viewport.prototype.invalidateCaches = function() { this.generation_++ };
 
 /**
  * @return {Rect} The image bounds in screen coordinates.
@@ skipping 207 matching lines @@
 };
 
 /**
  * Repaint all clients.
  */
 Viewport.prototype.repaint = function() {
   this.update();
   for (var i = 0; i != this.repaintCallbacks_.length; i++)
     this.repaintCallbacks_[i]();
 };