Add embedder-specific headers to HTTP CONNECT tunnel request

components/data_reduction_proxy/browser/data_reduction_proxy_auth_request_handler.h

Index: components/data_reduction_proxy/browser/data_reduction_proxy_auth_request_handler.h
diff --git a/components/data_reduction_proxy/browser/data_reduction_proxy_auth_request_handler.h b/components/data_reduction_proxy/browser/data_reduction_proxy_auth_request_handler.h
index 855e41c61a69c8b8f909f8f4da91e4fe9f1e9151..3966e052ba50b755383d6dec82c388557b40c00e 100644
--- a/components/data_reduction_proxy/browser/data_reduction_proxy_auth_request_handler.h
+++ b/components/data_reduction_proxy/browser/data_reduction_proxy_auth_request_handler.h
@@ -16,6 +16,7 @@ class SingleThreadTaskRunner;
 }
 
 namespace net {
+class HostPortPair;
 class HttpRequestHeaders;
 class HttpResponseHeaders;
 class ProxyServer;
@@ -54,11 +55,20 @@ class DataReductionProxyAuthRequestHandler {
 
   // Adds a 'Chrome-Proxy' header to |request_headers| with the data reduction
   // proxy authentication credentials. Only adds this header if the provided
-  // |proxy_server| is a data reduction proxy. Must be called on the IO thread.
+  // |proxy_server| is a data reduction proxy and not the data reduction proxy's
+  // CONNECT server. Must be called on the IO thread.
   void MaybeAddRequestHeader(net::URLRequest* request,
                              const net::ProxyServer& proxy_server,
                              net::HttpRequestHeaders* request_headers);
 
+  // Adds a 'Chrome-Proxy' header to |request_headers| with the data reduction
+  // proxy authentication credentials. Only adds this header if the provided
+  // |proxy_server| is the data reduction proxy's CONNECT server. Must be called
+  // on the IO thread.
+  void MaybeAddProxyTunnelRequestHandler(
+      const net::HostPortPair& proxy_server,
+      net::HttpRequestHeaders* request_headers);
+
   // Sets a new authentication key. This must be called for platforms that do
   // not have a default key defined. See the constructor implementation for
   // those platforms. Must be called on the UI thread.
@@ -106,6 +116,14 @@ class DataReductionProxyAuthRequestHandler {
                           std::string* session,
                           std::string* credentials);
 
+  // Adds authentication headers only if |expects_ssl| is true and
+  // |proxy_server| is a data reduction proxy used for ssl tunneling via
+  // HTTP CONNECT, or |expect_ssl| is false and |proxy_server| is a data
+  // reduction proxy for HTTP traffic.
+  void MaybeAddRequestHeaderImpl(const net::HostPortPair& proxy_server,
+                                 bool expect_ssl,
+                                 net::HttpRequestHeaders* request_headers);
+
   // Authentication state.
   std::string key_;