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

chrome/browser/ui/android/infobars/infobar_android.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_INFOBAR_ANDROID_H_
 #define CHROME_BROWSER_UI_ANDROID_INFOBARS_INFOBAR_ANDROID_H_
 
 #include <string>
 
 #include "base/android/jni_weak_ref.h"
@@ skipping 36 matching lines @@
 
   virtual void SetJavaInfoBar(
       const base::android::JavaRef<jobject>& java_info_bar);
   jobject GetJavaInfoBar();
   bool HasSetJavaInfoBar() const;
 
   // Tells the Java-side counterpart of this InfoBar to point to the replacement
   // InfoBar instead of this one.
   void ReassignJavaInfoBar(InfoBarAndroid* replacement);
 
-  virtual void OnLinkClicked(JNIEnv* env, jobject obj) {}
-  void OnButtonClicked(JNIEnv* env, jobject obj, jint action);
-  void OnCloseButtonClicked(JNIEnv* env, jobject obj);
+  virtual void OnLinkClicked(JNIEnv* env,
+                             const base::android::JavaParamRef<jobject>& obj) {}
+  void OnButtonClicked(JNIEnv* env,
+                       const base::android::JavaParamRef<jobject>& obj,
+                       jint action);
+  void OnCloseButtonClicked(JNIEnv* env,
+                            const base::android::JavaParamRef<jobject>& obj);
 
   void CloseJavaInfoBar();
 
   // Maps from a Chromium ID (IDR_TRANSLATE) to a enum value that Java code can
   // translate into a Drawable ID using the ResourceId class.
   int GetEnumeratedIconId();
 
   // Acquire the java infobar from a different one.  This is used to do in-place
   // replacements.
   virtual void PassJavaInfoBar(InfoBarAndroid* source) {}
 
  protected:
   // Derived classes must implement this method to process the corresponding
   // action.
   virtual void ProcessButton(int action) = 0;
 
   void CloseInfoBar();
   InfoBarAndroid* infobar_android() { return this; }
 
  private:
   base::android::ScopedJavaGlobalRef<jobject> java_info_bar_;
 
   DISALLOW_COPY_AND_ASSIGN(InfoBarAndroid);
 };
 
 // Registers the NativeInfoBar's native methods through JNI.
 bool RegisterNativeInfoBar(JNIEnv* env);
 
 #endif  // CHROME_BROWSER_UI_ANDROID_INFOBARS_INFOBAR_ANDROID_H_