Add missing using declarations in cronet code.

components/cronet/android/test/sdch_test_util.cc

 // Copyright 2015 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 "sdch_test_util.h"
 
 #include <string>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "base/android/scoped_java_ref.h"
 #include "base/bind.h"
 #include "base/macros.h"
 #include "components/cronet/android/cronet_url_request_context_adapter.h"
 #include "components/cronet/android/url_request_context_adapter.h"
 #include "jni/SdchObserver_jni.h"
 #include "net/base/sdch_manager.h"
 #include "net/base/sdch_observer.h"
 #include "net/url_request/url_request_context.h"
 #include "url/gurl.h"
 
+using base::android::JavaParamRef;
+
 namespace cronet {
 
 namespace {
 
 class TestSdchObserver : public net::SdchObserver {
  public:
   TestSdchObserver(
       const GURL& target_url,
       net::SdchManager* manager,
       const base::android::ScopedJavaGlobalRef<jobject>& jsdch_observer_ref)
@@ skipping 102 matching lines @@
       FROM_HERE,
       base::Bind(&AddSdchObserverOnNetworkThreadLegacyAPI, target_url,
                  jsdch_observer_ref, base::Unretained(context_adapter)));
 }
 
 bool RegisterSdchTestUtil(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace cronet