Add a workaround for the load event not being called in image loader.

ui/file_manager/image_loader/piex_loader.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.
 
 /**
  * @typedef {{
  *   fulfill: function(PiexLoaderResponse):undefined,
  *   reject: function(string):undefined}
  * }}
  */
@@ skipping 176 matching lines @@
       var listenerContainer = document.createElement('div');
       listenerContainer.appendChild(this.naclModule_);
       listenerContainer.addEventListener('load', this.onNaclLoadBound_, true);
       listenerContainer.addEventListener(
           'message', this.onNaclMessageBound_, true);
       listenerContainer.addEventListener('error', this.onNaclErrorBound_, true);
       listenerContainer.addEventListener('crash', this.onNaclCrashBound_, true);
       listenerContainer.style.height = '0px';
       this.containerElement_ = listenerContainer;
       document.body.appendChild(listenerContainer);
+
+      // Force a relayout. Workaround for load event not being called on <embed>
+      // for a NaCl module. crbug.com/699930
+      /** @suppress {suspiciousCode} */ this.naclModule_.offsetTop;
     }.bind(this));
   }.bind(this)).catch(function (error) {
     console.error(error);
     return false;
   });
 
   return this.naclPromise_;
 };
 
 /**
@@ skipping 122 matching lines @@
              delete this.requests_[requestId];
              this.requests_[message.id] = {fulfill: fulfill, reject: reject};
            }.bind(this))
         .catch(function(error) {
           delete this.requests_[requestId];
           console.error('PiexLoaderError: ', error);
           return Promise.reject(error);
         });
   }.bind(this));
 };