Introduce NetworkDelegate's implementation in extensions.

content/shell/browser/shell_browser_context.h

Index: content/shell/browser/shell_browser_context.h
diff --git a/content/shell/browser/shell_browser_context.h b/content/shell/browser/shell_browser_context.h
index 7cc78cb803d87acc831ae6b985be32667e62b776..47e9fdb15ca332ecc8050eded1e9f503928567ee 100644
--- a/content/shell/browser/shell_browser_context.h
+++ b/content/shell/browser/shell_browser_context.h
@@ -54,14 +54,26 @@ class ShellBrowserContext : public BrowserContext {
   virtual PushMessagingService* GetPushMessagingService() OVERRIDE;
   virtual SSLHostStateDelegate* GetSSLHostStateDelegate() OVERRIDE;
 
+  virtual content::ShellURLRequestContextGetter* CreateURLRequestContextGetter(
+    ProtocolHandlerMap* protocol_handlers,
+    URLRequestInterceptorScopedVector request_interceptors);
   net::URLRequestContextGetter* CreateRequestContext(
       ProtocolHandlerMap* protocol_handlers,
       URLRequestInterceptorScopedVector request_interceptors);
+
+  net::URLRequestContextGetter* CreateRequestContext(
+      ProtocolHandlerMap* protocol_handlers,
+      URLRequestInterceptorScopedVector request_interceptors,
+      net::NetworkDelegate* network_delegate);
+
   net::URLRequestContextGetter* CreateRequestContextForStoragePartition(
       const base::FilePath& partition_path,
       bool in_memory,
       ProtocolHandlerMap* protocol_handlers,
       URLRequestInterceptorScopedVector request_interceptors);
+ protected:
+  net::NetLog* net_log() { return net_log_; }
+  bool ignore_certificate_errors() { return ignore_certificate_errors_; }
 
  private:
   class ShellResourceContext;