Implement user selected wallpaper feature.

chrome/browser/chromeos/login/mock_user_manager.h

Index: chrome/browser/chromeos/login/mock_user_manager.h
diff --git a/chrome/browser/chromeos/login/mock_user_manager.h b/chrome/browser/chromeos/login/mock_user_manager.h
index a1dc5305f4d3f34e95ac9c788514900eca56afcf..c99475d7a82e846b64d5616b0745b4759cf749dd 100644
--- a/chrome/browser/chromeos/login/mock_user_manager.h
+++ b/chrome/browser/chromeos/login/mock_user_manager.h
@@ -42,8 +42,14 @@ class MockUserManager : public UserManager {
   MOCK_CONST_METHOD1(GetUserDisplayEmail, std::string(const std::string&));
   MOCK_METHOD2(SaveUserDefaultImageIndex, void(const std::string&, int));
   MOCK_METHOD2(SaveUserImage, void(const std::string&, const SkBitmap&));
+  MOCK_METHOD1(SetLoggedInUserCustomWallpaperLayout,void(
+      ash::WallpaperLayout));
   MOCK_METHOD2(SaveUserImageFromFile, void(const std::string&,
                                            const FilePath&));
+  MOCK_METHOD4(SaveUserWallpaperFromFile, void(const std::string&,
+                                               const FilePath&,
+                                               ash::WallpaperLayout,
+                                               WallpaperDelegate*));
   MOCK_METHOD1(SaveUserImageFromProfileImage, void(const std::string&));
   MOCK_METHOD1(DownloadProfileImage, void(const std::string&));
   MOCK_CONST_METHOD0(IsCurrentUserOwner, bool(void));