Add support for transparent/translucent pixels in the user image

chrome/browser/chromeos/login/screens/user_image_screen.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/chromeos/login/screens/user_image_screen.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 175 matching lines @@
 void UserImageScreen::OnImageAccepted() {
   UserImageManager* image_manager = GetUserImageManager();
   int uma_index = 0;
   switch (selected_image_) {
     case user_manager::User::USER_IMAGE_EXTERNAL:
       // Photo decoding may not have been finished yet.
       if (user_photo_.isNull()) {
         accept_photo_after_decoding_ = true;
         return;
       }
-      image_manager->SaveUserImage(
-          user_manager::UserImage::CreateAndEncode(user_photo_));
+      image_manager->SaveUserImage(user_manager::UserImage::CreateAndEncode(
+          user_photo_, user_manager::UserImage::FORMAT_JPEG));
       uma_index = default_user_image::kHistogramImageFromCamera;
       break;
     case user_manager::User::USER_IMAGE_PROFILE:
       image_manager->SaveUserImageFromProfileImage();
       uma_index = default_user_image::kHistogramImageFromProfile;
       break;
     default:
       DCHECK(selected_image_ >= 0 &&
              selected_image_ < default_user_image::kDefaultImagesCount);
       image_manager->SaveUserDefaultImageIndex(selected_image_);
@@ skipping 146 matching lines @@
 
 void UserImageScreen::ReportSyncResult(SyncResult timed_out) const {
   base::TimeDelta duration = base::Time::Now() - sync_waiting_start_time_;
   UMA_HISTOGRAM_TIMES("Login.NewUserPriorityPrefsSyncTime", duration);
   UMA_HISTOGRAM_ENUMERATION("Login.NewUserPriorityPrefsSyncResult",
                             static_cast<int>(timed_out),
                             static_cast<int>(SyncResult::COUNT));
 }
 
 }  // namespace chromeos