Move data reduction proxy to Chrome-Proxy header for authentication

net/base/network_delegate.h

Index: net/base/network_delegate.h
diff --git a/net/base/network_delegate.h b/net/base/network_delegate.h
index 4be320b9305ccd869a76239eeb25834aa5d8a83d..4a5fda27985f4b799b405a5ee9d08145b9cc8883 100644
--- a/net/base/network_delegate.h
+++ b/net/base/network_delegate.h
@@ -35,6 +35,7 @@ namespace net {
 class CookieOptions;
 class HttpRequestHeaders;
 class HttpResponseHeaders;
+class ProxyInfo;
 class SocketStream;
 class URLRequest;
 
@@ -63,6 +64,9 @@ class NET_EXPORT NetworkDelegate : public base::NonThreadSafe {
   int NotifyBeforeSendHeaders(URLRequest* request,
                               const CompletionCallback& callback,
                               HttpRequestHeaders* headers);
+  int NotifyBeforeSendProxyHeaders(URLRequest* request,
+                                   const ProxyInfo* proxy_info,
+                                   HttpRequestHeaders* headers);
   void NotifySendHeaders(URLRequest* request,
                          const HttpRequestHeaders& headers);
   int NotifyHeadersReceived(
@@ -126,6 +130,14 @@ class NET_EXPORT NetworkDelegate : public base::NonThreadSafe {
                                   const CompletionCallback& callback,
                                   HttpRequestHeaders* headers);
 
+  // Called after a proxy connection. Allows the delegate to read/write
+  // |headers] before they get sent out. |headers| is valid only until
+  // OnCompleted or OnURLRequestDestroyed is called for this request. Returns OK
+  // by default.
+  virtual int OnBeforeSendProxyHeaders(URLRequest* request,
+                                       const ProxyInfo* proxy_info,
+                                       HttpRequestHeaders* headers);
+
   // Called right before the HTTP request(s) are being sent to the network.
   // |headers| is only valid until OnCompleted or OnURLRequestDestroyed is
   // called for this request.