[Sync] Migrate SyncInternalsMessageHandler off CallJavascriptFunctionUnsafe.

chrome/browser/sync/profile_sync_service_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/sync/profile_sync_service_android.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <string>
@@ skipping 449 matching lines @@
 }
 
 // Functionality only available for testing purposes.
 
 ScopedJavaLocalRef<jstring> ProfileSyncServiceAndroid::GetAboutInfoForTest(
     JNIEnv* env,
     const JavaParamRef<jobject>&) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 
   std::unique_ptr<base::DictionaryValue> about_info =
-      syncer::sync_ui_util::ConstructAboutInformation(
-          sync_service_, sync_service_->signin(), chrome::GetChannel());
+      syncer::sync_ui_util::ConstructAboutInformation(sync_service_,
+                                                      chrome::GetChannel());
   std::string about_info_json;
   base::JSONWriter::Write(*about_info, &about_info_json);
 
   return ConvertUTF8ToJavaString(env, about_info_json);
 }
 
 jlong ProfileSyncServiceAndroid::GetLastSyncedTimeForTest(
     JNIEnv* env,
     const JavaParamRef<jobject>& obj) {
   // Use profile preferences here instead of SyncPrefs to avoid an extra
@@ skipping 29 matching lines @@
 static jlong Init(JNIEnv* env, const JavaParamRef<jobject>& obj) {
   ProfileSyncServiceAndroid* profile_sync_service_android =
       new ProfileSyncServiceAndroid(env, obj);
   if (profile_sync_service_android->Init()) {
     return reinterpret_cast<intptr_t>(profile_sync_service_android);
   } else {
     delete profile_sync_service_android;
     return 0;
   }
 }