Deprecate --load-component-extension command line flag

chrome/common/chrome_switches.cc

Index: chrome/common/chrome_switches.cc
diff --git a/chrome/common/chrome_switches.cc b/chrome/common/chrome_switches.cc
index dfd072db19e4e214fe19ade8ab5e296cfcfd50ff..f3ef99f5deaa32db85b4ca9bd78edd9fa65c211f 100644
--- a/chrome/common/chrome_switches.cc
+++ b/chrome/common/chrome_switches.cc
@@ -580,9 +580,6 @@ const char kKioskMode[]                     = "kiosk";
 // See http://crbug.com/31395.
 const char kKioskModePrinting[]             = "kiosk-printing";
 
-// Comma-separated list of directories with component extensions to load.
-const char kLoadComponentExtension[]        = "load-component-extension";
-
 // Loads an extension from the specified directory.
 const char kLoadExtension[]                 = "load-extension";