Remove the NaCl PPAPI proxy lab.

chrome/app/generated_resources.grd

Index: chrome/app/generated_resources.grd
===================================================================
--- chrome/app/generated_resources.grd	(revision 175222)
+++ chrome/app/generated_resources.grd	(working copy)
@@ -6117,12 +6117,6 @@
       <message name="IDS_FLAGS_ENABLE_PNACL_DESCRIPTION" desc="Description of the 'Enable Portable Native Client' lab.">
         Enable support for Portable Native Client.
       </message>
-      <message name="IDS_FLAGS_ENABLE_NACL_SRPC_PROXY_NAME" desc="Name of the 'Enable Native Client SRPC Proxy' lab.">
-        Native Client SRPC Proxy.
-      </message>
-      <message name="IDS_FLAGS_ENABLE_NACL_SRPC_PROXY_DESCRIPTION" desc="Description of the 'Enable Native Client SRPC Proxy' lab.">
-        Use NaCl SRPC, rather than Chrome IPC, to proxy Pepper calls between Chrome and the plugin.
-      </message>
       <message name="IDS_FLAGS_DOWNLOADS_NEW_UI_NAME" desc="Name of the 'New Downloads UI' lab.">
         New Downloads UI
       </message>
@@ -9317,7 +9311,7 @@
       <if expr="pp_ifdef('android') or pp_ifdef('ios')">
         <message name="IDS_ERRORPAGES_SUGGESTION_PROXY_CONFIG" desc="When a webpage fails to load, in some cases we suggest checking the proxy server configuration, or disabling the proxy server.">
           If you use a proxy server, check your proxy settings or contact your
-          network administrator to make sure the proxy server is working. 
+          network administrator to make sure the proxy server is working.
         </message>
       </if>
       <if expr="not pp_ifdef('android') and not pp_ifdef('ios')">