webapk: Avoid overwriting default CreationParams

content/browser/child_process_launcher.h

Index: content/browser/child_process_launcher.h
diff --git a/content/browser/child_process_launcher.h b/content/browser/child_process_launcher.h
index d145a9bd15e4bf6a8b548a59488e23d5ed86ee7f..bd26cea3d10be01dd5e8aa051e48e41c42dc86a6 100644
--- a/content/browser/child_process_launcher.h
+++ b/content/browser/child_process_launcher.h
@@ -66,6 +66,8 @@ class CONTENT_EXPORT ChildProcessLauncher : public base::NonThreadSafe {
     virtual ~Client() {}
   };
 
+  enum { DEFAULT_PARAM_ID = 0 };
+
   // Launches the process asynchronously, calling the client when the result is
   // ready.  Deleting this object before the process is created is safe, since
   // the callback won't be called.  If the process is still running by the time
@@ -82,7 +84,8 @@ class CONTENT_EXPORT ChildProcessLauncher : public base::NonThreadSafe {
       Client* client,
       std::unique_ptr<mojo::edk::PendingProcessConnection> pending_connection,
       const mojo::edk::ProcessErrorCallback& process_error_callback,
-      bool terminate_on_shutdown = true);
+      bool terminate_on_shutdown = true,
+      int param_id = DEFAULT_PARAM_ID);
   ~ChildProcessLauncher();
 
   // True if the process is being launched and so the handle isn't available.