[cros] Remove vertical clipping in OOBE step container.

chrome/browser/resources/chromeos/login/display_manager.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.
 
 /**
  * @fileoverview Display manager for WebUI OOBE and login.
  */
 
 // TODO(xiyuan): Find a better to share those constants.
 /** @const */ var SCREEN_OOBE_NETWORK = 'connect';
@@ skipping 199 matching lines @@
         }
       } else {
         // Start fading animation for login display.
         oldStep.classList.add('faded');
         newStep.classList.remove('faded');
       }
 
       // Adjust inner container height based on new step's height.
       this.updateInnerContainerSize_(newStep);
 
+      var innerContainer = $('inner-container');
       if (this.currentStep_ != nextStepIndex &&
           !oldStep.classList.contains('hidden')) {
         if (oldStep.classList.contains('animated') || !this.isNewOobe()) {
-          oldStep.classList.add('animation');
+          innerContainer.classList.add('animation');
           oldStep.addEventListener('webkitTransitionEnd', function f(e) {
             oldStep.removeEventListener('webkitTransitionEnd', f);
             if (oldStep.classList.contains('faded') ||
                 oldStep.classList.contains('left') ||
                 oldStep.classList.contains('right')) {
-              oldStep.classList.remove('animation');
+              innerContainer.classList.remove('animation');
               oldStep.classList.add('hidden');
             }
           });
         } else {
           oldStep.classList.add('hidden');
         }
       } else {
         // First screen on OOBE launch.
-        var innerContainer = $('inner-container');
         innerContainer.classList.remove('down');
         innerContainer.addEventListener(
             'webkitTransitionEnd', function f(e) {
               innerContainer.removeEventListener('webkitTransitionEnd', f);
               $('progress-dots').classList.remove('down');
             });
         newHeader.classList.remove('right');  // Old OOBE.
         // Report back first OOBE screen being painted.
         window.webkitRequestAnimationFrame(function() {
           chrome.send('loginVisible');
@@ skipping 303 matching lines @@
         });
       }
     }
   };
 
   // Export
   return {
     DisplayManager: DisplayManager
   };
 });