jni_generator: Pass object parameters as JavaParamRef.

chrome/browser/android/accessibility/font_size_prefs_android.cc

 // Copyright 2014 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/accessibility/font_size_prefs_android.h"
 
 #include "base/observer_list.h"
 #include "base/prefs/pref_change_registrar.h"
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile_android.h"
@@ skipping 53 matching lines @@
                                           jlong observer_ptr) {
   FontSizePrefsObserverAndroid* font_size_prefs_observer_android =
       reinterpret_cast<FontSizePrefsObserverAndroid*>(observer_ptr);
   observers_.RemoveObserver(font_size_prefs_observer_android);
 }
 
 bool FontSizePrefsAndroid::Register(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
-jlong Init(JNIEnv* env, jobject obj) {
+jlong Init(JNIEnv* env, const JavaParamRef<jobject>& obj) {
   FontSizePrefsAndroid* font_size_prefs_android =
       new FontSizePrefsAndroid(env, obj);
   return reinterpret_cast<intptr_t>(font_size_prefs_android);
 }
 
 void FontSizePrefsAndroid::OnFontScaleFactorPrefsChanged() {
   JNIEnv* env = base::android::AttachCurrentThread();
   FOR_EACH_OBSERVER(Observer,
                     observers_,
                     OnChangeFontSize(GetFontScaleFactor(env, java_ref_.obj())));
@@ skipping 17 matching lines @@
 
 bool FontSizePrefsObserverAndroid::Register(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 void FontSizePrefsObserverAndroid::DestroyObserverAndroid(JNIEnv* env,
                                                           jobject obj) {
   delete this;
 }
 
-jlong InitObserverAndroid(JNIEnv* env, jobject obj) {
+jlong InitObserverAndroid(JNIEnv* env, const JavaParamRef<jobject>& obj) {
   FontSizePrefsObserverAndroid* observer_wrapper =
       new FontSizePrefsObserverAndroid(env, obj);
   return reinterpret_cast<intptr_t>(observer_wrapper);
 }
 
 void FontSizePrefsObserverAndroid::OnChangeFontSize(float font_size) {
   JNIEnv* env = base::android::AttachCurrentThread();
   Java_FontSizePrefsObserverWrapper_onChangeFontSize(
       env, java_ref_.obj(), font_size);
 }
 
 void FontSizePrefsObserverAndroid::OnChangeForceEnableZoom(bool enabled) {
   JNIEnv* env = base::android::AttachCurrentThread();
   Java_FontSizePrefsObserverWrapper_onChangeForceEnableZoom(
       env, java_ref_.obj(), enabled);
 }