Pass method parameters as JavaParamRef in android_webview.

android_webview/native/aw_message_port_service_impl.h

Index: android_webview/native/aw_message_port_service_impl.h
diff --git a/android_webview/native/aw_message_port_service_impl.h b/android_webview/native/aw_message_port_service_impl.h
index 7f42421bae70957862875b05cf9b7f5083865e10..2ee31b46c0492a2e69e4c43cc364cd64a7a10c47 100644
--- a/android_webview/native/aw_message_port_service_impl.h
+++ b/android_webview/native/aw_message_port_service_impl.h
@@ -42,10 +42,18 @@ class AwMessagePortServiceImpl : public AwMessagePortService {
   void CleanupPort(int message_port_id) override;
 
   // Methods called from Java.
-  void PostAppToWebMessage(JNIEnv* env, jobject object, int sender_id,
-      jstring message, jintArray sent_ports);
-  void ClosePort(JNIEnv* env, jobject object, int message_port_id);
-  void ReleaseMessages(JNIEnv* env, jobject object, int message_port_id);
+  void PostAppToWebMessage(
+      JNIEnv* env,
+      const base::android::JavaParamRef<jobject>& object,
+      int sender_id,
+      const base::android::JavaParamRef<jstring>& message,
+      const base::android::JavaParamRef<jintArray>& sent_ports);
+  void ClosePort(JNIEnv* env,
+                 const base::android::JavaParamRef<jobject>& object,
+                 int message_port_id);
+  void ReleaseMessages(JNIEnv* env,
+                       const base::android::JavaParamRef<jobject>& object,
+                       int message_port_id);
 
   void RemoveSentPorts(const std::vector<int>& sent_ports);