Add support for transparent/translucent pixels in the user image

chrome/browser/ui/webui/options/chromeos/change_picture_options_handler.cc

 // Copyright (c) 2013 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/ui/webui/options/chromeos/change_picture_options_handler.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 335 matching lines @@
 
   UserImageManager* user_image_manager =
       ChromeUserManager::Get()->GetUserImageManager(GetUser()->GetAccountId());
   int image_index = user_manager::User::USER_IMAGE_INVALID;
   bool waiting_for_camera_photo = false;
 
   if (image_type == "old") {
     // Previous image (from camera or manually uploaded) re-selected.
     DCHECK(!previous_image_.isNull());
     user_image_manager->SaveUserImage(
-        user_manager::UserImage::CreateAndEncode(previous_image_));
+        user_manager::UserImage::CreateAndEncode(
+            previous_image_, user_manager::UserImage::FORMAT_JPEG));
 
     UMA_HISTOGRAM_ENUMERATION("UserImage.ChangeChoice",
                               default_user_image::kHistogramImageOld,
                               default_user_image::kHistogramImagesCount);
     VLOG(1) << "Selected old user image";
   } else if (image_type == "default" &&
              default_user_image::IsDefaultImageUrl(image_url, &image_index)) {
     // One of the default user images.
     user_image_manager->SaveUserDefaultImageIndex(image_index);
 
@@ skipping 43 matching lines @@
   UMA_HISTOGRAM_ENUMERATION("UserImage.ChangeChoice",
                             default_user_image::kHistogramImageFromFile,
                             default_user_image::kHistogramImagesCount);
   VLOG(1) << "Selected image from file";
 }
 
 void ChangePictureOptionsHandler::SetImageFromCamera(
     const gfx::ImageSkia& photo) {
   ChromeUserManager::Get()
       ->GetUserImageManager(GetUser()->GetAccountId())
-      ->SaveUserImage(user_manager::UserImage::CreateAndEncode(photo));
+      ->SaveUserImage(user_manager::UserImage::CreateAndEncode(
+          photo, user_manager::UserImage::FORMAT_JPEG));
   UMA_HISTOGRAM_ENUMERATION("UserImage.ChangeChoice",
                             default_user_image::kHistogramImageFromCamera,
                             default_user_image::kHistogramImagesCount);
   VLOG(1) << "Selected camera photo";
 }
 
 void ChangePictureOptionsHandler::SetCameraPresent(bool present) {
   base::FundamentalValue present_value(present);
 
   web_ui()->CallJavascriptFunctionUnsafe(
@@ skipping 41 matching lines @@
   Profile* profile = Profile::FromWebUI(web_ui());
   const user_manager::User* user =
       ProfileHelper::Get()->GetUserByProfile(profile);
   if (!user)
     return user_manager::UserManager::Get()->GetActiveUser();
   return user;
 }
 
 }  // namespace options
 }  // namespace chromeos