Load user custom wallpaper after browser crash.

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 c99475d7a82e846b64d5616b0745b4759cf749dd..92a9de763912c7f4b2515c370ba56309b8d4df6a 100644
--- a/chrome/browser/chromeos/login/mock_user_manager.h
+++ b/chrome/browser/chromeos/login/mock_user_manager.h
@@ -24,6 +24,7 @@ class MockUserManager : public UserManager {
   MOCK_METHOD0(DemoUserLoggedIn, void(void));
   MOCK_METHOD0(GuestUserLoggedIn, void(void));
   MOCK_METHOD1(EphemeralUserLoggedIn, void(const std::string&));
+  MOCK_METHOD0(SetLoggedInUserWallpaper, void(void));
   MOCK_METHOD1(UserSelected, void(const std::string&));
   MOCK_METHOD0(SessionStarted, void(void));
   MOCK_METHOD2(RemoveUser, void(const std::string&, RemoveUserDelegate*));
@@ -76,11 +77,6 @@ class MockUserManager : public UserManager {
   // Sets a new User instance.
   void SetLoggedInUser(const std::string& email, bool guest);
 
-  // Return an invalid user wallpaper index. No need to load a real wallpaper.
-  // When loading wallpaper asynchronously, it may actually cause a crash if
-  // test finished before wallpaper loaded.
-  virtual int GetLoggedInUserWallpaperIndex() OVERRIDE;
-
   User* user_;
 };