Upgrade the windows specific version of LaunchProcess to avoid raw handles.

content/zygote/zygote_linux.cc

Index: content/zygote/zygote_linux.cc
diff --git a/content/zygote/zygote_linux.cc b/content/zygote/zygote_linux.cc
index f0b91619be59864721abf7d3ccd03dc5b3738f0a..bd642216b1158466f6acc806a885ade583fcb045 100644
--- a/content/zygote/zygote_linux.cc
+++ b/content/zygote/zygote_linux.cc
@@ -248,7 +248,7 @@ void Zygote::HandleReapRequest(int fd,
     // with this for now.
 #if !defined(THREAD_SANITIZER)
     // TODO(jln): this old code is completely broken. See crbug.com/274855.
-    base::EnsureProcessTerminated(child_info.internal_pid);
+    base::EnsureProcessTerminated(base::Process(child_info.internal_pid));
 #else
     LOG(WARNING) << "Zygote process omitting a call to "
         << "base::EnsureProcessTerminated() for child pid " << child