Add controlled setting indicator for proxy configuration

chrome/app/generated_resources.grd

Index: chrome/app/generated_resources.grd
diff --git a/chrome/app/generated_resources.grd b/chrome/app/generated_resources.grd
index 96d7af665845b843fb683de397382d88ba25be00..17ff88a94d83985dc9faa4c7a19d6a5b62115c70 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -10132,6 +10132,12 @@ experiment id: "<ph name="EXPERIMENT_ID">$5<ex>ar1</ex></ph>"
       <message name="IDS_OPTIONS_CONTROLLED_SETTING_FOLLOW_RECOMMENDATION" desc="Link text displayed in the controlled settings bubble to clear the user-supplied value and start following the recommendation.">
         Follow recommendation
       </message>
+      <message name="IDS_OPTIONS_CONTROLLED_SETTINGS_POLICY" desc="Text displayed in the controlled settings bubble when it is shown for a group of settings whose values are enforced by policy.">
+        These settings are enforced by your administrator.
+      </message>
+      <message name="IDS_OPTIONS_CONTROLLED_SETTINGS_EXTENSION" desc="Text displayed in the controlled settings bubble when it is shown for a group of settings whose values are enforced by an extension.">
+        These settings are enforced by an extension.
+      </message>
 
       <!-- Options search page strings. -->
       <message name="IDS_OPTIONS_SEARCH_PAGE_TITLE" desc="Title of the settings search page.">