Shell: switches cleanup.

shell/child_switches.cc

Index: shell/child_switches.cc
diff --git a/gpu/config/gpu_switches.cc b/shell/child_switches.cc
similarity index 55%
copy from gpu/config/gpu_switches.cc
copy to shell/child_switches.cc
index fdf9f0e180bebd44ce7e5b58e04f4208bfe0820b..5dc85ae7138359388b61aea33b20e876a12cf188 100644
--- a/gpu/config/gpu_switches.cc
+++ b/shell/child_switches.cc
@@ -2,11 +2,11 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "gpu/config/gpu_switches.h"
+#include "shell/child_switches.h"
 
 namespace switches {
 
-// Pass a set of GpuDriverBugWorkaroundType ids, seperated by ','.
-const char kGpuDriverBugWorkarounds[] = "gpu-driver-bug-workarounds";
+// Used only by the child process. Not for user use.
+const char kChildProcess[] = "child-process";
 
 }  // namespace switches