jni_generator: Pass object parameters as JavaParamRef.

testing/android/native_test/native_test_launcher.cc

 // Copyright (c) 2012 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.
 
 // This class sets up the environment for running the native tests inside an
 // android application. It outputs (to a fifo) markers identifying the
 // START/PASSED/CRASH of the test suite, FAILURE/SUCCESS of individual tests,
 // etc.
 // These markers are read by the test runner script to generate test results.
 // It installs signal handlers to detect crashes.
@@ skipping 52 matching lines @@
 void AndroidLog(int priority, const char* format, ...) {
   va_list args;
   va_start(args, format);
   __android_log_vprint(priority, kLogTag, format, args);
   va_end(args);
 }
 
 }  // namespace
 
 static void RunTests(JNIEnv* env,
-                     jobject obj,
-                     jstring jcommand_line_flags,
-                     jstring jcommand_line_file_path,
-                     jstring jstdout_file_path,
+                     const JavaParamRef<jobject>& obj,
+                     const JavaParamRef<jstring>& jcommand_line_flags,
+                     const JavaParamRef<jstring>& jcommand_line_file_path,
+                     const JavaParamRef<jstring>& jstdout_file_path,
                      jboolean jstdout_fifo,
-                     jobject app_context) {
+                     const JavaParamRef<jobject>& app_context) {
   // Command line initialized basically, will be fully initialized later.
   static const char* const kInitialArgv[] = { "ChromeTestActivity" };
   base::CommandLine::Init(arraysize(kInitialArgv), kInitialArgv);
 
   // Set the application context in base.
   base::android::ScopedJavaLocalRef<jobject> scoped_context(
       env, env->NewLocalRef(app_context));
   base::android::InitApplicationContext(env, scoped_context);
   base::android::RegisterJni(env);
 
@@ skipping 63 matching lines @@
   sa.sa_sigaction = SignalHandler;
   sa.sa_flags = SA_SIGINFO;
 
   for (unsigned int i = 0; kExceptionSignals[i] != -1; ++i) {
     sigaction(kExceptionSignals[i], &sa, &g_old_sa[kExceptionSignals[i]]);
   }
 }
 
 }  // namespace android
 }  // namespace testing