Move click-to-play to about:flags.

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 f48753869f6d0c4f5992036f57ef711c2bb93f64..9d3bb822f46c29e3221b38efe1c33807846b3e1d 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -4104,6 +4104,12 @@ Keep your key file in a safe place. You will need it to create new versions of y
       <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">