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

base/process/launch_win.cc

Index: base/process/launch_win.cc
diff --git a/base/process/launch_win.cc b/base/process/launch_win.cc
index 1d83ef9e318d5e5e82f7522905af843771871fdc..3c787fe4ea2880e90db0e080076958787488d302 100644
--- a/base/process/launch_win.cc
+++ b/base/process/launch_win.cc
@@ -232,17 +232,6 @@
   return true;
 }
 
-// TODO(rvargas) crbug.com/416721: Remove this stub after LaunchProcess is
-// fully migrated to use Process.
-Process LaunchProcess(const string16& cmdline,
-                      const LaunchOptions& options) {
-  win::ScopedHandle process_handle;
-  if (LaunchProcess(cmdline, options, &process_handle))
-    return Process(process_handle.Take());
-
-  return Process();
-}
-
 bool LaunchProcess(const CommandLine& cmdline,
                    const LaunchOptions& options,
                    ProcessHandle* process_handle) {