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

chrome/browser/chrome_child_process_watcher.h

Index: chrome/browser/chrome_child_process_watcher.h
diff --git a/chrome/browser/chrome_child_process_watcher.h b/chrome/browser/chrome_child_process_watcher.h
new file mode 100644
index 0000000000000000000000000000000000000000..c8f9fdca4f9798748dee577ab1738cdbbe4294f9
--- /dev/null
+++ b/chrome/browser/chrome_child_process_watcher.h
@@ -0,0 +1,25 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_CHROME_CHILD_PROCESS_WATCHER_H_
+#define CHROME_BROWSER_CHROME_CHILD_PROCESS_WATCHER_H_
+
+#include "base/basictypes.h"
+#include "content/public/browser/browser_child_process_observer.h"
+
+// ChromeChildProcessWatcher watches for crashed child processes.
+class ChromeChildProcessWatcher : public content::BrowserChildProcessObserver {
+ public:
+  ChromeChildProcessWatcher();
+  ~ChromeChildProcessWatcher() override;
+
+ private:
+  // content::BrowserChildProcessObserver:
+  void BrowserChildProcessCrashed(const content::ChildProcessData& data,
+                                  int exit_code) override;
+
+  DISALLOW_COPY_AND_ASSIGN(ChromeChildProcessWatcher);
+};
+
+#endif  // CHROME_BROWSER_CHROME_CHILD_PROCESS_WATCHER_H_