Enable looping of videos in Files.app.

chrome/browser/resources/file_manager/js/photo/slide_mode.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.
 
 'use strict';
 
 /**
  * Slide mode displays a single image and has a set of controls to navigate
  * between the images and to edit an image.
  *
@@ skipping 119 matching lines @@
   var bubbleClose = util.createChild(this.bubble_, 'close-x');
   bubbleClose.addEventListener('click', this.onCloseBubble_.bind(this));
 
   // Video player controls.
   this.mediaSpacer_ =
       util.createChild(this.container_, 'video-controls-spacer');
   this.mediaToolbar_ = util.createChild(this.mediaSpacer_, 'tool');
   this.mediaControls_ = new VideoControls(
       this.mediaToolbar_,
       this.showErrorBanner_.bind(this, 'VIDEO_ERROR'),
+      this.displayStringFunction_.bind(this),
       this.toggleFullScreen_.bind(this),
       this.container_);
 
   // Ribbon and related controls.
   this.arrowBox_ = util.createChild(this.container_, 'arrow-box');
 
   this.arrowLeft_ =
       util.createChild(this.arrowBox_, 'arrow left tool dimmable');
   this.arrowLeft_.addEventListener('click',
       this.advanceManually.bind(this, -1));
@@ skipping 604 matching lines @@
  * @return {string} Message to show if there are unsaved changes.
  */
 SlideMode.prototype.onBeforeUnload = function() {
   if (this.editor_.isBusy())
     return this.displayStringFunction_('unsaved_changes');
   return null;
 };
 
 /**
  * Click handler for the image container.
+ *
+ * @param {Event} event Mouse click event.
  * @private
  */
-SlideMode.prototype.onClick_ = function() {
-  if (this.isShowingVideo_())
+SlideMode.prototype.onClick_ = function(event) {
+  if (!this.isShowingVideo_())
+    return;
+  if (event.ctrlKey) {
+    this.mediaControls_.toggleLoopedModeWithFeedback(true);
+    if (!this.mediaControls_.isPlaying())
+      this.mediaControls_.togglePlayStateWithFeedback();
+  } else {
     this.mediaControls_.togglePlayStateWithFeedback();
+  }
 };
 
 /**
  * Click handler for the entire document.
  * @param {Event} e Mouse click event.
  * @private
  */
 SlideMode.prototype.onDocumentClick_ = function(e) {
   // Close the bubble if clicked outside of it and if it is visible.
   if (!this.bubble_.contains(e.target) &&
@@ skipping 497 matching lines @@
       done = true;
     }
   }.bind(this);
 };
 
 /**
  * If the user touched the image and moved the finger more than SWIPE_THRESHOLD
  * horizontally it's considered as a swipe gesture (change the current image).
  */
 SwipeOverlay.SWIPE_THRESHOLD = 100;