Add extra parameter to BrowserChildProcessCrashed to pass the exit_code at time of crash/termination

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 395c4876b8d736e4de46b11a71970bac95a2e818..14e0a84c239f1531c2eff3c7d2069796e4f97e05 100644
--- a/content/public/browser/child_process_data.h
+++ b/content/public/browser/child_process_data.h
@@ -30,9 +30,15 @@ struct ChildProcessData {
   // current process.
   base::ProcessHandle handle;
 
+  // The exit code for the process. This is only valid for processes that have
+  // already exited e.g. when receiving a BrowserChildProcessCrashed callback.
+  int exit_code;
+
   explicit ChildProcessData(int process_type)
-      : process_type(process_type), id(0), handle(base::kNullProcessHandle) {
-  }
+      : process_type(process_type),
+        id(0),
+        handle(base::kNullProcessHandle),
+        exit_code(0) {}
 };
 
 }  // namespace content