Add missing using statements for JNI types.

components/sync/test/fake_server/android/fake_server_helper_android.cc

 // Copyright 2014 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 "components/sync/test/fake_server/android/fake_server_helper_android.h"
 
 #include <jni.h>
 #include <stddef.h>
 
 #include <memory>
@@ skipping 10 matching lines @@
 #include "components/sync/test/fake_server/entity_builder_factory.h"
 #include "components/sync/test/fake_server/fake_server.h"
 #include "components/sync/test/fake_server/fake_server_network_resources.h"
 #include "components/sync/test/fake_server/fake_server_verifier.h"
 #include "components/sync/test/fake_server/tombstone_entity.h"
 #include "components/sync/test/fake_server/unique_client_entity.h"
 #include "jni/FakeServerHelper_jni.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "url/gurl.h"
 
+using base::android::JavaParamRef;
+
 FakeServerHelperAndroid::FakeServerHelperAndroid(JNIEnv* env, jobject obj) {}
 
 FakeServerHelperAndroid::~FakeServerHelperAndroid() {}
 
 static jlong Init(JNIEnv* env, const JavaParamRef<jobject>& obj) {
   FakeServerHelperAndroid* fake_server_android =
       new FakeServerHelperAndroid(env, obj);
   return reinterpret_cast<intptr_t>(fake_server_android);
 }
 
@@ skipping 266 matching lines @@
                                               jlong fake_server) {
   fake_server::FakeServer* fake_server_ptr =
       reinterpret_cast<fake_server::FakeServer*>(fake_server);
   fake_server_ptr->ClearServerData();
 }
 
 // static
 bool FakeServerHelperAndroid::Register(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }