Move click-to-play to about:flags.

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. -->
 
 <grit base_dir="." latest_public_release="0" current_release="1"
       source_lang_id="en" enc_check="möl">
   <outputs>
     <output filename="grit/generated_resources.h" type="rc_header">
       <emit emit_type='prepend'></emit>
@@ skipping 4086 matching lines @@
       </message>
       <message name="IDS_FLAGS_CONFIRM_TO_QUIT_DESCRIPTION" desc="Description of the 'Confirm to Quit' lab.">
         Receive a prompt before quitting to confirm the action.
       </message>
       <message name="IDS_FLAGS_SNAP_START_NAME" desc="Name of the 'Snap Start' lab.">
         Snap Start
       </message>
       <message name="IDS_FLAGS_SNAP_START_DESCRIPTION" desc="Description of the 'Snap Start' lab.">
         Enables an experimental TLS extension which removes a round trip from HTTPS handshakes.
       </message>
+      <message name="IDS_FLAGS_CLICK_TO_PLAY_NAME" desc="Name of the 'Click-to-Play' lab.">
+        Click-to-Play
+      </message>
+      <message name="IDS_FLAGS_CLICK_TO_PLAY_DESCRIPTION" desc="Description of the 'Click-to-Play' lab.">
+        Click on a blocked plug-in to run it.
+      </message>
 
       <!-- Instant -->
       <message name="IDS_INSTANT_OPT_IN_ENABLE" desc="Button shown in the omnibox dropdown for enabling instant">
         Enable...
       </message>
       <message name="IDS_INSTANT_OPT_IN_NO_THANKS" desc="Button shown in the omnibox dropdodown for not enabling instant">
         No thanks
       </message>
       <message name="IDS_INSTANT_OPT_IN_LABEL" desc="Label shown in the omnibox dropdown for enabling instant">
         Enable Instant for faster searching and browsing?
@@ skipping 6885 matching lines @@
 
     </messages>
 
     <structures fallback_to_english="true">
       <structure name="IDD_CHROME_FRAME_FIND_DIALOG" file="cf_resources.rc" type="dialog" >
       </structure>
     </structures>
 
   </release>
 </grit>