Add missing using statements for JNI types.

content/browser/accessibility/browser_accessibility_manager_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 "content/browser/accessibility/browser_accessibility_manager_android.h"
 
 #include <stddef.h>
 
 #include <cmath>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "base/i18n/char_iterator.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
 #include "content/browser/accessibility/browser_accessibility_android.h"
 #include "content/browser/accessibility/one_shot_accessibility_tree_search.h"
 #include "content/common/accessibility_messages.h"
 #include "jni/BrowserAccessibilityManager_jni.h"
 #include "ui/accessibility/ax_text_utils.h"
 
 using base::android::AttachCurrentThread;
+using base::android::JavaParamRef;
 using base::android::ScopedJavaLocalRef;
 
 namespace content {
 
 namespace {
 
 using SearchKeyToPredicateMap =
     base::hash_map<base::string16, AccessibilityMatchPredicate>;
 base::LazyInstance<SearchKeyToPredicateMap> g_search_key_to_predicate_map =
     LAZY_INSTANCE_INITIALIZER;
@@ skipping 920 matching lines @@
 
   JNIEnv* env = AttachCurrentThread();
   return root_manager->java_ref().get(env);
 }
 
 bool RegisterBrowserAccessibilityManager(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace content