Add managed user lock/unlock button for the extensions page.

chrome/browser/resources/extensions/extensions.css

Index: chrome/browser/resources/extensions/extensions.css
diff --git a/chrome/browser/resources/extensions/extensions.css b/chrome/browser/resources/extensions/extensions.css
index 68f80591ac13a5e39185fe670b7201db9751767d..61034c567f7ba280bc0925e2da32246e8626efcb 100644
--- a/chrome/browser/resources/extensions/extensions.css
+++ b/chrome/browser/resources/extensions/extensions.css
@@ -309,6 +309,27 @@ html[dir='rtl'] #extension-settings .trash {
   display: none;
 }
 
+.profile-is-managed .extension-commands-config {

[Bernhard Bauer, 2013/02/19 18:19:16]

You can combine all of these selectors for display: none.

+  display: none;
+}
+
+#managed-user-control-div {
+  display: inline-block;
+  padding-left: 7px;
+}
+
+.no-managed-user-controls #managed-user-control-div {
+  display: none;
+}
+
+.page:not(.profile-is-managed) #unlock-button {
+  display: none;
+}
+
+.profile-is-managed #lock-button {
+  display: none;
+}
+
 /* Sideload Wipeout */
 
 .sideload-wipeout-learn-more {