Add embedder-specific headers to HTTP CONNECT tunnel request

chrome/browser/io_thread.h

Index: chrome/browser/io_thread.h
diff --git a/chrome/browser/io_thread.h b/chrome/browser/io_thread.h
index 8559217696215011d52c245d80441f8a38d241d3..3eaef60a583428c774d9e22c11a0d013d1f4ddf0 100644
--- a/chrome/browser/io_thread.h
+++ b/chrome/browser/io_thread.h
@@ -40,6 +40,7 @@ class DnsProbeService;
 #if defined(SPDY_PROXY_AUTH_ORIGIN)
 namespace data_reduction_proxy {
 class DataReductionProxyAuthRequestHandler;
+class DataReductionProxyTunnelDelegate;
 class DataReductionProxyParams;
 }
 #endif  // defined(SPDY_PROXY_AUTH_ORIGIN)
@@ -202,6 +203,8 @@ class IOThread : public content::BrowserThreadDelegate {
       data_reduction_proxy_params;
   scoped_ptr<data_reduction_proxy::DataReductionProxyAuthRequestHandler>
       data_reduction_proxy_auth_request_handler;
+  scoped_ptr<data_reduction_proxy::DataReductionProxyTunnelDelegate>
+      data_reduction_proxy_tunnel_delegate;
 #endif
   };