Move extension whitelist switch to //extensions

extensions/common/switches.cc

Index: extensions/common/switches.cc
diff --git a/extensions/common/switches.cc b/extensions/common/switches.cc
index 64b9af5c7faa7f6dffce7be11daa124b440574ac..8e2febae482b9bf7f2fa445da8635ad54a1eb467 100644
--- a/extensions/common/switches.cc
+++ b/extensions/common/switches.cc
@@ -58,6 +58,9 @@ const char kGlobalCommands[] = "global-commands";
 const char kShowComponentExtensionOptions[] =
     "show-component-extension-options";
 
+// Adds the given extension ID to all the permission whitelists.
+const char kWhitelistedExtensionID[] = "whitelisted-extension-id";
+
 }  // namespace switches
 
 }  // namespace extensions