[cros] Profile image downloader is always reset after a download.

chrome/browser/chromeos/login/user_manager.h

Index: chrome/browser/chromeos/login/user_manager.h
diff --git a/chrome/browser/chromeos/login/user_manager.h b/chrome/browser/chromeos/login/user_manager.h
index 7746f138309fb597734b83123ab94405ffe39dc3..1d6a51fdeeaa0fe869271488283572f8801a3436 100644
--- a/chrome/browser/chromeos/login/user_manager.h
+++ b/chrome/browser/chromeos/login/user_manager.h
@@ -186,6 +186,7 @@ class UserManager : public ProfileDownloaderDelegate,
 
   // Sets image for user |username| and sends LOGIN_USER_IMAGE_CHANGED
   // notification unless this is a new user and image is set for the first time.
+  // If |image| is empty, sets a stub image for the user.
   void SetUserImage(const std::string& username,
                     int image_index,
                     const SkBitmap& image);
@@ -212,6 +213,10 @@ class UserManager : public ProfileDownloaderDelegate,
                              int image_index,
                              bool is_async);
 
+  // Initializes |downloaded_profile_picture_| with the picture of the logged-in
+  // user.
+  void InitDownloadedProfileImage();
+
   // Deletes user's image file. Runs on FILE thread.
   void DeleteUserImage(const FilePath& image_path);