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

chrome/browser/ui/android/infobars/confirm_infobar.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_ANDROID_INFOBARS_CONFIRM_INFOBAR_H_
 #define CHROME_BROWSER_UI_ANDROID_INFOBARS_CONFIRM_INFOBAR_H_
 
 #include "base/basictypes.h"
 #include "base/strings/string16.h"
 #include "chrome/browser/ui/android/infobars/infobar_android.h"
 #include "components/infobars/core/confirm_infobar_delegate.h"
 
 class ConfirmInfoBar : public InfoBarAndroid {
  public:
   explicit ConfirmInfoBar(scoped_ptr<ConfirmInfoBarDelegate> delegate);
   ~ConfirmInfoBar() override;
 
  protected:
   base::string16 GetTextFor(ConfirmInfoBarDelegate::InfoBarButton button);
   ConfirmInfoBarDelegate* GetDelegate();
-  void OnLinkClicked(JNIEnv* env, jobject obj) override;
+  void OnLinkClicked(JNIEnv* env,
+                     const base::android::JavaParamRef<jobject>& obj) override;
 
   // InfoBarAndroid overrides.
   base::android::ScopedJavaLocalRef<jobject> CreateRenderInfoBar(
       JNIEnv* env) override;
 
  private:
   void ProcessButton(int action) override;
 
   base::android::ScopedJavaGlobalRef<jobject> java_confirm_delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(ConfirmInfoBar);
 };
 
 // Registers native methods.
 bool RegisterConfirmInfoBarDelegate(JNIEnv* env);
 
 #endif  // CHROME_BROWSER_UI_ANDROID_INFOBARS_CONFIRM_INFOBAR_H_