Shell: switches cleanup.

shell/switches.h

Index: shell/switches.h
diff --git a/shell/switches.h b/shell/switches.h
index a1ff4c4f19f0a78c52df44644237b6024545f2c4..1e5508a2d2e6edbc9d50c56ebe6eec7b41f6b321 100644
--- a/shell/switches.h
+++ b/shell/switches.h
@@ -11,10 +11,9 @@
 namespace switches {
 
 // All switches in alphabetical order. The switches should be documented
-// alongside the definition of their values in the .cc file and, as needed,
-// in mojo_main's Usage() function.
+// alongside the definition of their values in the .cc file and, as needed, in
+// desktop/main.cc's Usage() function.
 extern const char kArgsFor[];
-extern const char kChildProcess[];
 extern const char kContentHandlers[];
 extern const char kCPUProfile[];
 extern const char kDisableCache[];