[cros] Encode user images when set from WebUI (regression fix).

chrome/browser/automation/automation_provider_observers_chromeos.cc

 // 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.
 
 #include "chrome/browser/automation/automation_provider_observers.h"
 
 #include "base/values.h"
 #include "chrome/browser/automation/automation_provider.h"
 #include "chrome/browser/chromeos/cros/cros_library.h"
 #include "chrome/browser/chromeos/login/authentication_notification_details.h"
@@ skipping 500 matching lines @@
       AutomationJSONReply(
           automation_,
           reply_message_.release()).SendError("User email is not set");
     }
     delete this;
     return;
   }
 
   // Set up an observer for UserManager (it will delete itself).
   user_manager->AddObserver(this);
-  user_manager->SaveUserImage(user.email(), chromeos::UserImage(photo));
+  user_manager->SaveUserImage(
+      user.email(), chromeos::UserImage::CreateAndEncode(photo));
 }
 
 void PhotoCaptureObserver::LocalStateChanged(
     chromeos::UserManager* user_manager) {
   user_manager->RemoveObserver(this);
   if (automation_) {
     AutomationJSONReply(
         automation_, reply_message_.release()).SendSuccess(NULL);
   }
   delete this;
 }