jni_generator: Pass object parameters as JavaParamRef.

chromecast/browser/android/cast_window_manager.cc

Index: chromecast/browser/android/cast_window_manager.cc
diff --git a/chromecast/browser/android/cast_window_manager.cc b/chromecast/browser/android/cast_window_manager.cc
index c53005b46b3ad0ac92a1e91b0ca60439bbb8a149..c4e2f1274eaf582c7b61d2bf4e5771bb192f56eb 100644
--- a/chromecast/browser/android/cast_window_manager.cc
+++ b/chromecast/browser/android/cast_window_manager.cc
@@ -52,12 +52,16 @@ bool RegisterCastWindowManager(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
-void Init(JNIEnv* env, jclass clazz, jobject obj) {
+void Init(JNIEnv* env,
+          const JavaParamRef<jclass>& clazz,
+          const JavaParamRef<jobject>& obj) {
   g_window_manager.Get().Reset(
       base::android::ScopedJavaLocalRef<jobject>(env, obj));
 }
 
-jlong LaunchCastWindow(JNIEnv* env, jclass clazz, jstring jurl) {
+jlong LaunchCastWindow(JNIEnv* env,
+                       const JavaParamRef<jclass>& clazz,
+                       const JavaParamRef<jstring>& jurl) {
   GURL url(base::android::ConvertJavaStringToUTF8(env, jurl));
   return reinterpret_cast<jlong>(
       CastWindowAndroid::CreateNewWindow(
@@ -65,8 +69,10 @@ jlong LaunchCastWindow(JNIEnv* env, jclass clazz, jstring jurl) {
           url));
 }
 
-void StopCastWindow(JNIEnv* env, jclass clazz,
-                    jlong nativeCastWindow, jboolean gracefully) {
+void StopCastWindow(JNIEnv* env,
+                    const JavaParamRef<jclass>& clazz,
+                    jlong nativeCastWindow,
+                    jboolean gracefully) {
   CastWindowAndroid* window =
       reinterpret_cast<CastWindowAndroid*>(nativeCastWindow);
   DCHECK(window);
@@ -76,7 +82,9 @@ void StopCastWindow(JNIEnv* env, jclass clazz,
     window->Destroy();
 }
 
-void EnableDevTools(JNIEnv* env, jclass clazz, jboolean enable) {
+void EnableDevTools(JNIEnv* env,
+                    const JavaParamRef<jclass>& clazz,
+                    jboolean enable) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   CastBrowserProcess::GetInstance()->pref_service()->SetBoolean(
       prefs::kEnableRemoteDebugging, enable);