jni: Pass method parameters as JavaParamRef in base.

base/android/jni_generator/sample_for_tests.h

Index: base/android/jni_generator/sample_for_tests.h
diff --git a/base/android/jni_generator/sample_for_tests.h b/base/android/jni_generator/sample_for_tests.h
index 5366faf2a8897aeee9fd03b5ef7244d12cd15c42..42ba84b07591b8a2721d764ed704e0a920d85745 100644
--- a/base/android/jni_generator/sample_for_tests.h
+++ b/base/android/jni_generator/sample_for_tests.h
@@ -148,19 +148,25 @@ class CPPClass {
 
   class InnerClass {
    public:
-    jdouble MethodOtherP0(JNIEnv* env, jobject caller);
+    jdouble MethodOtherP0(JNIEnv* env,
+                          const base::android::JavaParamRef<jobject>& caller);
   };
 
-  void Destroy(JNIEnv* env, jobject caller);
+  void Destroy(JNIEnv* env, const base::android::JavaParamRef<jobject>& caller);
 
-  jint Method(JNIEnv* env, jobject caller);
+  jint Method(JNIEnv* env, const base::android::JavaParamRef<jobject>& caller);
 
-  void AddStructB(JNIEnv* env, jobject caller, jobject structb);
+  void AddStructB(JNIEnv* env,
+                  const base::android::JavaParamRef<jobject>& caller,
+                  const base::android::JavaParamRef<jobject>& structb);
 
-  void IterateAndDoSomethingWithStructB(JNIEnv* env, jobject caller);
+  void IterateAndDoSomethingWithStructB(
+      JNIEnv* env,
+      const base::android::JavaParamRef<jobject>& caller);
 
   base::android::ScopedJavaLocalRef<jstring> ReturnAString(
-      JNIEnv* env, jobject caller);
+      JNIEnv* env,
+      const base::android::JavaParamRef<jobject>& caller);
 
  private:
   std::map<long, std::string> map_;