Settings People Revamp: Add tests for ChromeOS Change Picture.

chrome/browser/ui/webui/settings/chromeos/change_picture_handler.cc

 // 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.
 
 #include "chrome/browser/ui/webui/settings/chromeos/change_picture_handler.h"
 
 #include "ash/audio/sounds.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
@@ skipping 258 matching lines @@
 }
 
 void ChangePictureHandler::HandleSelectImage(const base::ListValue* args) {
   std::string image_url;
   std::string image_type;
   if (!args || args->GetSize() != 2 || !args->GetString(0, &image_url) ||
       !args->GetString(1, &image_type)) {
     NOTREACHED();
     return;
   }
-  DCHECK(!image_url.empty());
+  // |image_url| may be empty unless |image_type| is "default".
   DCHECK(!image_type.empty());
 
   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());
@@ skipping 114 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 settings
 }  // namespace chromeos