android: Allow registering multiple CreationParams

content/browser/android/child_process_launcher_android.cc

Index: content/browser/android/child_process_launcher_android.cc
diff --git a/content/browser/android/child_process_launcher_android.cc b/content/browser/android/child_process_launcher_android.cc
index bd16a7caa4db762ea0a0e8360240daba1bced370..43b1396c7291eef31108c2a916bcd1b309d3cb80 100644
--- a/content/browser/android/child_process_launcher_android.cc
+++ b/content/browser/android/child_process_launcher_android.cc
@@ -92,9 +92,10 @@ void StartChildProcess(
     }
   }
 
+  constexpr int param_key = 0;  // TODO(boliu): Use this.
   Java_ChildProcessLauncher_start(
-      env, base::android::GetApplicationContext(), j_argv, child_process_id,
-      j_file_infos,
+      env, base::android::GetApplicationContext(), param_key, j_argv,
+      child_process_id, j_file_infos,
       reinterpret_cast<intptr_t>(new StartChildProcessCallback(callback)));
 }