Add missing using statements for JNI types.

chrome/browser/android/history_report/history_report_jni_bridge.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/history_report/history_report_jni_bridge.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <vector>
@@ skipping 10 matching lines @@
 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/history/history_service_factory.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "components/bookmarks/browser/bookmark_model.h"
 #include "components/history/core/browser/history_service.h"
 #include "content/public/browser/browser_thread.h"
 #include "jni/HistoryReportJniBridge_jni.h"
 
+using base::android::JavaParamRef;
+using base::android::ScopedJavaLocalRef;
+
 namespace history_report {
 
 static jlong Init(JNIEnv* env, const JavaParamRef<jobject>& obj) {
   HistoryReportJniBridge* bridge = new HistoryReportJniBridge(env, obj);
   return reinterpret_cast<intptr_t>(bridge);
 }
 
 bool RegisterHistoryReportJniBridge(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
@@ skipping 148 matching lines @@
 base::android::ScopedJavaLocalRef<jstring> HistoryReportJniBridge::Dump(
     JNIEnv* env,
     const JavaParamRef<jobject>& obj) {
   std::string dump;
   dump.append(delta_file_service_->Dump());
   dump.append(usage_reports_buffer_service_->Dump());
   return base::android::ConvertUTF8ToJavaString(env, dump);
 }
 
 }  // namespace history_report