jni_generator: Pass object parameters as JavaParamRef.

content/browser/android/content_view_core_impl.cc

 // Copyright 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.
 
 #include "content/browser/android/content_view_core_impl.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_array.h"
 #include "base/android/jni_string.h"
 #include "base/android/scoped_java_ref.h"
@@ skipping 1432 matching lines @@
 
 void ContentViewCoreImpl::PullReset() {
   JNIEnv* env = AttachCurrentThread();
   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
   if (!obj.is_null())
     Java_ContentViewCore_onOverscrollRefreshReset(env, obj.obj());
 }
 
 // This is called for each ContentView.
 jlong Init(JNIEnv* env,
-           jobject obj,
-           jobject web_contents,
-           jobject view_android_delegate,
+           const JavaParamRef<jobject>& obj,
+           const JavaParamRef<jobject>& web_contents,
+           const JavaParamRef<jobject>& view_android_delegate,
            jlong window_android,
-           jobject retained_objects_set) {
+           const JavaParamRef<jobject>& retained_objects_set) {
   ContentViewCoreImpl* view = new ContentViewCoreImpl(
       env, obj, WebContents::FromJavaWebContents(web_contents),
       view_android_delegate,
       reinterpret_cast<ui::WindowAndroid*>(window_android),
       retained_objects_set);
   return reinterpret_cast<intptr_t>(view);
 }
 
-static ScopedJavaLocalRef<jobject>
-FromWebContentsAndroid(JNIEnv* env, jclass clazz, jobject jweb_contents) {
+static ScopedJavaLocalRef<jobject> FromWebContentsAndroid(
+    JNIEnv* env,
+    const JavaParamRef<jclass>& clazz,
+    const JavaParamRef<jobject>& jweb_contents) {
   WebContents* web_contents = WebContents::FromJavaWebContents(jweb_contents);
   if (!web_contents)
     return ScopedJavaLocalRef<jobject>();
 
   ContentViewCore* view = ContentViewCore::FromWebContents(web_contents);
   if (!view)
     return ScopedJavaLocalRef<jobject>();
 
   return view->GetJavaObject();
 }
 
 bool RegisterContentViewCore(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace content