Disable chrome://options UI elements if the corresponding preference is not user-modifiable.

chrome/app/generated_resources.grd

 <?xml version="1.0" encoding="UTF-8"?>
 
 <!--
 This file contains definitions of resources that will be translated for each
 locale.  The variables is_win, is_macosx, is_linux, and is_posix are available
 for making strings OS specific.  Other platform defines such as use_titlecase
 are declared in build/common.gypi.
 -->
 
 <grit base_dir="." latest_public_release="0" current_release="1"
@@ skipping 7770 matching lines @@
       <if expr="pp_ifdef('use_titlecase')">
         <message name="IDS_OPTIONS_BROWSING_DATA_GROUP_NAME" desc="In Title Case: The title of the 'Browsing data' group.">
           Browsing Data
         </message>
         <message name="IDS_OPTIONS_IMPORT_DATA_BUTTON" desc="In Title Case: Label for the import data button.">
           Import Data from Another Browser...
         </message>
       </if>
 
       <if expr="pp_ifdef('chromeos')">
+        <message name="IDS_OPTIONS_EXTENSION_MANAGED_PREFS" desc="ChromeOS tooltip displayed for an extension-managed option the user won't be able to change.">
+          This setting is managed by an extension.
+        </message>
+      </if>
+      <if expr="not pp_ifdef('chromeos') and is_posix">
+        <message name="IDS_OPTIONS_EXTENSION_MANAGED_PREFS" desc="Mac/Linux tooltip displayed for an extension-managed option the user won't be able to change.">
+          This preference is managed by an extension.
+        </message>
+      </if>
+      <if expr="os == 'win32'">
+        <message name="IDS_OPTIONS_EXTENSION_MANAGED_PREFS" desc="Windows tooltip displayed for an extension-managed option the user won't be able to change.">
+          This option is managed by an extension.
+        </message>
+      </if>
+
+      <if expr="pp_ifdef('chromeos')">
         <message name="IDS_OPTIONS_MANAGED_PREFS" desc="ChromeOS banner displayed in case there are managed options the user won't be able to change.">
           Some settings have been disabled by your IT administrator.
         </message>
       </if>
       <if expr="not pp_ifdef('chromeos') and is_posix">
         <message name="IDS_OPTIONS_MANAGED_PREFS" desc="Mac/Linux banner displayed in case there are managed options the user won't be able to change.">
           Some preferences have been disabled by your IT administrator.
         </message>
       </if>
       <if expr="os == 'win32'">
@@ skipping 5103 matching lines @@
     </includes>
     <structures fallback_to_english="true">
       <structure name="IDD_CHROME_FRAME_FIND_DIALOG" file="cf_resources.rc" type="dialog" >
       </structure>
       <structure name="IDD_CHROME_FRAME_READY_PROMPT" file="cf_resources.rc" type="dialog" >
       </structure>
     </structures>
 
   </release>
 </grit>