jni_generator: Pass object parameters as JavaParamRef.

chrome/browser/android/tab_state.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/tab_state.h"
 
 #include <jni.h>
 #include <limits>
 #include <vector>
 
@@ skipping 478 matching lines @@
   navigations[0] = entry.get();
 
   return WebContentsState::WriteNavigationsAsByteBuffer(env,
                                                         is_off_the_record,
                                                         navigations,
                                                         0);
 }
 
 // Static JNI methods.
 
-static void FreeWebContentsStateBuffer(JNIEnv* env, jclass clazz, jobject obj) {
+static void FreeWebContentsStateBuffer(JNIEnv* env,
+                                       const JavaParamRef<jclass>& clazz,
+                                       const JavaParamRef<jobject>& obj) {
   void* data = env->GetDirectBufferAddress(obj);
   free(data);
 }
 
 static ScopedJavaLocalRef<jobject> RestoreContentsFromByteBuffer(
     JNIEnv* env,
-    jclass clazz,
-    jobject state,
+    const JavaParamRef<jclass>& clazz,
+    const JavaParamRef<jobject>& state,
     jint saved_state_version,
     jboolean initially_hidden) {
   return WebContentsState::RestoreContentsFromByteBuffer(env,
                                                          clazz,
                                                          state,
                                                          saved_state_version,
                                                          initially_hidden);
 }
 
-static ScopedJavaLocalRef<jobject> GetContentsStateAsByteBuffer(JNIEnv* env,
-                                                                jclass clazz,
-                                                                jobject jtab) {
+static ScopedJavaLocalRef<jobject> GetContentsStateAsByteBuffer(
+    JNIEnv* env,
+    const JavaParamRef<jclass>& clazz,
+    const JavaParamRef<jobject>& jtab) {
   TabAndroid* tab_android = TabAndroid::GetNativeTab(env, jtab);
   return WebContentsState::GetContentsStateAsByteBuffer(env, tab_android);
 }
 
 static ScopedJavaLocalRef<jobject> CreateSingleNavigationStateAsByteBuffer(
     JNIEnv* env,
-    jclass clazz,
-    jstring url,
-    jstring referrer_url,
+    const JavaParamRef<jclass>& clazz,
+    const JavaParamRef<jstring>& url,
+    const JavaParamRef<jstring>& referrer_url,
     jint referrer_policy,
     jboolean is_off_the_record) {
   return WebContentsState::CreateSingleNavigationStateAsByteBuffer(
       env, url, referrer_url, referrer_policy, is_off_the_record);
 }
 
 static ScopedJavaLocalRef<jstring> GetDisplayTitleFromByteBuffer(
     JNIEnv* env,
-    jclass clazz,
-    jobject state,
+    const JavaParamRef<jclass>& clazz,
+    const JavaParamRef<jobject>& state,
     jint saved_state_version) {
   void* data = env->GetDirectBufferAddress(state);
   int size = env->GetDirectBufferCapacity(state);
 
   ScopedJavaLocalRef<jstring> result =
       WebContentsState::GetDisplayTitleFromByteBuffer(
           env, data, size, saved_state_version);
   return result;
 }
 
 static ScopedJavaLocalRef<jstring> GetVirtualUrlFromByteBuffer(
     JNIEnv* env,
-    jclass clazz,
-    jobject state,
+    const JavaParamRef<jclass>& clazz,
+    const JavaParamRef<jobject>& state,
     jint saved_state_version) {
   void* data = env->GetDirectBufferAddress(state);
   int size = env->GetDirectBufferCapacity(state);
   ScopedJavaLocalRef<jstring> result =
       WebContentsState::GetVirtualUrlFromByteBuffer(
           env, data, size, saved_state_version);
   return result;
 }
 
 // Creates a historical tab entry from the serialized tab contents contained
 // within |state|.
 static void CreateHistoricalTab(JNIEnv* env,
-                                jclass clazz,
-                                jobject state,
+                                const JavaParamRef<jclass>& clazz,
+                                const JavaParamRef<jobject>& state,
                                 jint saved_state_version) {
   scoped_ptr<WebContents> web_contents(WebContents::FromJavaWebContents(
       WebContentsState::RestoreContentsFromByteBuffer(env, clazz, state,
                                                       saved_state_version, true)
           .obj()));
   if (web_contents.get())
     TabAndroid::CreateHistoricalTabFromContents(web_contents.get());
 }
 
 bool RegisterTabState(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }