Add missing using statements for JNI types.

chrome/browser/android/precache/precache_launcher.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 "chrome/browser/android/precache/precache_launcher.h"
 
 #include <jni.h>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_weak_ref.h"
 #include "base/bind.h"
 #include "base/logging.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/precache/precache_manager_factory.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "components/precache/content/precache_manager.h"
 #include "components/prefs/pref_service.h"
 #include "jni/PrecacheLauncher_jni.h"
 
 using base::android::AttachCurrentThread;
+using base::android::JavaParamRef;
 using precache::PrecacheManager;
 
 namespace {
 
 // Get the profile that should be used for precaching.
 Profile* GetProfile() {
   Profile* profile = g_browser_process->profile_manager()->GetLastUsedProfile()
       ->GetOriginalProfile();
   DCHECK(profile);
   DCHECK(g_browser_process->profile_manager()->IsValidProfile(profile));
@@ skipping 56 matching lines @@
 static jboolean ShouldRun(JNIEnv* env, const JavaParamRef<jobject>& obj) {
   Profile* profile = GetProfile();
   PrecacheManager* precache_manager = GetPrecacheManager(profile);
   return precache_manager && (precache_manager->IsInExperimentGroup() ||
                               precache_manager->IsInControlGroup());
 }
 
 bool RegisterPrecacheLauncher(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }