jni: Pass method parameters as JavaParamRef in chrome/browser/ui.

chrome/browser/ui/android/context_menu_helper.cc

 // Copyright 2013 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/ui/android/context_menu_helper.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_array.h"
 #include "base/android/jni_string.h"
 #include "chrome/browser/ui/tab_contents/core_tab_helper.h"
@@ skipping 85 matching lines @@
           ConvertUTF8ToJavaString(env, params.src_url.spec()).obj(),
           ConvertUTF16ToJavaString(env, params.title_text).obj(),
           image_was_fetched_lo_fi,
           ConvertUTF8ToJavaString(env, sanitizedReferrer.spec()).obj(),
           params.referrer_policy);
 
   return jmenu_info;
 }
 
 void ContextMenuHelper::OnStartDownload(JNIEnv* env,
-                                        jobject obj,
+                                        const JavaParamRef<jobject>& obj,
                                         jboolean jis_link,
-                                        jstring jheaders) {
+                                        const JavaParamRef<jstring>& jheaders) {
   std::string headers(ConvertJavaStringToUTF8(env, jheaders));
   content::DownloadControllerAndroid::Get()->StartContextMenuDownload(
       context_menu_params_,
       web_contents_,
       jis_link,
       headers);
 }
 
-void ContextMenuHelper::SearchForImage(JNIEnv* env, jobject obj) {
+void ContextMenuHelper::SearchForImage(JNIEnv* env,
+                                       const JavaParamRef<jobject>& obj) {
   CoreTabHelper::FromWebContents(web_contents_)->SearchByImageInNewTab(
       context_menu_params_.src_url);
 }
 
-void ContextMenuHelper::ShareImage(JNIEnv* env, jobject obj) {
+void ContextMenuHelper::ShareImage(JNIEnv* env,
+                                   const JavaParamRef<jobject>& obj) {
   CoreTabHelper::FromWebContents(web_contents_)->
       RequestThumbnailForContextNode(
           0,
           gfx::Size(kShareImageMaxWidth, kShareImageMaxHeight),
           base::Bind(&ContextMenuHelper::OnShareImage,
                      base::Unretained(this)));
 }
 
 void ContextMenuHelper::OnShareImage(const std::string& thumbnail_data,
                                      const gfx::Size& original_size) {
@@ skipping 19 matching lines @@
       env,
       java_obj_.obj(),
       jwindow_android.obj(),
       j_bytes.obj());
 }
 
 bool RegisterContextMenuHelper(JNIEnv* env) {
   return RegisterNativesImpl(env) &&
          ContextMenuParamsAndroid::RegisterNativesImpl(env);
 }