Add missing using statements for JNI types.

chrome/browser/android/feedback/connectivity_checker.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 "chrome/browser/android/feedback/connectivity_checker.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "base/android/scoped_java_ref.h"
 #include "base/location.h"
 #include "base/single_thread_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/time/time.h"
 #include "base/timer/timer.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_android.h"
 #include "jni/ConnectivityChecker_jni.h"
 #include "net/base/load_flags.h"
 #include "net/http/http_status_code.h"
 #include "net/url_request/url_fetcher.h"
 #include "net/url_request/url_fetcher_delegate.h"
 #include "net/url_request/url_request_context_getter.h"
 #include "net/url_request/url_request_status.h"
 #include "url/gurl.h"
 
+using base::android::JavaParamRef;
+
 namespace chrome {
 namespace android {
 
 namespace {
 // GENERATED_JAVA_ENUM_PACKAGE: org.chromium.chrome.browser.feedback
 // GENERATED_JAVA_PREFIX_TO_STRIP: CONNECTIVITY_CHECK_RESULT_
 enum ConnectivityCheckResult {
   CONNECTIVITY_CHECK_RESULT_UNKNOWN = 0,
   CONNECTIVITY_CHECK_RESULT_CONNECTED = 1,
   CONNECTIVITY_CHECK_RESULT_NOT_CONNECTED = 2,
@@ skipping 158 matching lines @@
   GURL url(base::android::ConvertJavaStringToUTF8(env, j_url));
   return url.is_valid();
 }
 
 bool RegisterConnectivityChecker(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace android
 }  // namespace chrome