Call RemoveObserver in AndroidSigninManager

chrome/browser/android/signin/signin_manager_android.cc

 // Copyright 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/android/signin/signin_manager_android.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 190 matching lines @@
   // well, so that the next signin doesn't trigger the acount change dialog.
   profile_->GetPrefs()->ClearPref(prefs::kGoogleServicesLastUsername);
 
   Java_SigninManager_onProfileDataWiped(base::android::AttachCurrentThread(),
                                         java_signin_manager_.obj());
 }
 
 void SigninManagerAndroid::MergeSessionCompleted(
     const std::string& account_id,
     const GoogleServiceAuthError& error) {
+  merge_session_helper_->RemoveObserver(this);
   merge_session_helper_.reset();
 }
 
 void SigninManagerAndroid::LogInSignedInUser(JNIEnv* env, jobject obj) {
   if (switches::IsNewProfileManagement()) {
     // New Mirror code path that just fires the events and let the
     // Account Reconcilor handles everything.
     AndroidProfileOAuth2TokenService* token_service =
         ProfileOAuth2TokenServiceFactory::GetPlatformSpecificForProfile(
             profile_);
@@ skipping 29 matching lines @@
   return !policy::BrowserPolicyConnector::IsNonEnterpriseUser(username);
 #else
   return false;
 #endif
 }
 
 // static
 bool SigninManagerAndroid::Register(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }