Allow multiple NaCl modules to be debugged.

content/public/browser/child_process_data.h

Index: content/public/browser/child_process_data.h
diff --git a/content/public/browser/child_process_data.h b/content/public/browser/child_process_data.h
index 3683be9c3303208e7823782a54b2ce7c3e6311b6..28076578ec7c9fe134125f3faad9939bc63d6d0a 100644
--- a/content/public/browser/child_process_data.h
+++ b/content/public/browser/child_process_data.h
@@ -28,8 +28,11 @@ struct ChildProcessData {
   // The handle to the process.
   base::ProcessHandle handle;
 
+  int nacl_debug_stub_port;
+
   explicit ChildProcessData(int process_type)
-      : process_type(process_type), id(0), handle(base::kNullProcessHandle) {
+      : process_type(process_type), id(0), handle(base::kNullProcessHandle),
+        nacl_debug_stub_port(0) {
   }
 };