[Payments] Move journey logger to native.

components/payments/content/android/currency_formatter_android.cc

Index: components/payments/content/android/currency_formatter_android.cc
diff --git a/components/payments/content/android/currency_formatter_android.cc b/components/payments/content/android/currency_formatter_android.cc
index 0ea0f91203346dfe2d267d5b63aadfb12459b640..3b3694e5c3da394b1efdd0de26ecd04f4d65040e 100644
--- a/components/payments/content/android/currency_formatter_android.cc
+++ b/components/payments/content/android/currency_formatter_android.cc
@@ -19,7 +19,7 @@ using ::base::android::ConvertJavaStringToUTF8;
 
 CurrencyFormatterAndroid::CurrencyFormatterAndroid(
     JNIEnv* env,
-    jobject unused_obj,
+    jobject jcaller,
     const JavaParamRef<jstring>& currency_code,
     const JavaParamRef<jstring>& currency_system,
     const JavaParamRef<jstring>& locale_name) {
@@ -34,13 +34,13 @@ CurrencyFormatterAndroid::CurrencyFormatterAndroid(
 CurrencyFormatterAndroid::~CurrencyFormatterAndroid() {}
 
 void CurrencyFormatterAndroid::Destroy(JNIEnv* env,
-                                       const JavaParamRef<jobject>& obj) {
+                                       const JavaParamRef<jobject>& jcaller) {
   delete this;
 }
 
 base::android::ScopedJavaLocalRef<jstring> CurrencyFormatterAndroid::Format(
     JNIEnv* env,
-    const JavaParamRef<jobject>& unused_obj,
+    const JavaParamRef<jobject>& jcaller,
     const JavaParamRef<jstring>& amount) {
   base::string16 result =
       currency_formatter_->Format(ConvertJavaStringToUTF8(env, amount));