Adds support for the DHCP portion of the WPAD (proxy auto-discovery) protocol.

net/proxy/proxy_script_fetcher_impl.h

Index: net/proxy/proxy_script_fetcher_impl.h
diff --git a/net/proxy/proxy_script_fetcher_impl.h b/net/proxy/proxy_script_fetcher_impl.h
index 419293f98e21e7413e25b1d323730e8bd8c892f4..6be7c85906fcdfd2897c2bcec895b00cc86374d5 100644
--- a/net/proxy/proxy_script_fetcher_impl.h
+++ b/net/proxy/proxy_script_fetcher_impl.h
@@ -24,7 +24,7 @@ class URLRequestContext;
 
 // Implementation of ProxyScriptFetcher that downloads scripts using the
 // specified request context.
-class ProxyScriptFetcherImpl : public ProxyScriptFetcher,
+class ProxyScriptFetcherImpl : public URLProxyScriptFetcher,
                                public URLRequest::Delegate {
  public:
   // Creates a ProxyScriptFetcher that issues requests through
@@ -43,11 +43,11 @@ class ProxyScriptFetcherImpl : public ProxyScriptFetcher,
 
   virtual void OnResponseCompleted(URLRequest* request);
 
-  // ProxyScriptFetcher methods:
-  virtual int Fetch(const GURL& url, string16* text,
-                    CompletionCallback* callback);
-  virtual void Cancel();
-  virtual URLRequestContext* GetRequestContext();
+  // URLProxyScriptFetcher methods:
+  virtual int Fetch(string16* text, CompletionCallback* callback) OVERRIDE;
+  virtual void Cancel() OVERRIDE;
+  virtual URLRequestContext* GetRequestContext() const OVERRIDE;
+  virtual void SetURL(const GURL& url) OVERRIDE;
 
   // URLRequest::Delegate methods:
   virtual void OnAuthRequired(URLRequest* request,
@@ -84,6 +84,10 @@ class ProxyScriptFetcherImpl : public ProxyScriptFetcher,
   // The context used for making network requests.
   URLRequestContext* url_request_context_;
 
+  // The URL that should be fetched. Valid only after |SetURL()| has been
+  // called.
+  GURL url_;
+
   // Buffer that URLRequest writes into.
   scoped_refptr<IOBuffer> buf_;