Add missing using statements for JNI types.

chrome/browser/android/bottombar/overlay_panel_content.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/bottombar/overlay_panel_content.h"
 
 #include <set>
 
 #include "base/android/jni_string.h"
 #include "base/callback.h"
 #include "base/memory/ptr_util.h"
 #include "base/memory/weak_ptr.h"
 #include "base/time/time.h"
 #include "chrome/browser/android/tab_android.h"
 #include "chrome/browser/history/history_service_factory.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/search_engines/template_url_service_factory.h"
 #include "chrome/browser/ui/android/view_android_helper.h"
 #include "components/history/core/browser/history_service.h"
 #include "components/navigation_interception/intercept_navigation_delegate.h"
 #include "components/variations/variations_associated_data.h"
 #include "components/web_contents_delegate_android/web_contents_delegate_android.h"
 #include "content/public/browser/android/content_view_core.h"
 #include "content/public/browser/web_contents.h"
 #include "jni/OverlayPanelContent_jni.h"
 #include "net/url_request/url_fetcher_impl.h"
 
+using base::android::JavaParamRef;
 using content::ContentViewCore;
 
 namespace {
 
 const int kHistoryDeletionWindowSeconds = 2;
 
 // Because we need a callback, this needs to exist.
 void OnHistoryDeletionDone() {
 }
 
@@ skipping 97 matching lines @@
 }
 
 bool RegisterOverlayPanelContent(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 jlong Init(JNIEnv* env, const JavaParamRef<jobject>& obj) {
   OverlayPanelContent* content = new OverlayPanelContent(env, obj);
   return reinterpret_cast<intptr_t>(content);
 }