added the allowcertificateerror method to the headless browser client so that it can handle certifi…

headless/lib/browser/headless_content_browser_client.h

Index: headless/lib/browser/headless_content_browser_client.h
diff --git a/headless/lib/browser/headless_content_browser_client.h b/headless/lib/browser/headless_content_browser_client.h
index d1ca74cce4ff07510db7f1812bc1e766b478345d..1c3f95fa996b5ed81d5b2093cc4c0c96aee6d79f 100644
--- a/headless/lib/browser/headless_content_browser_client.h
+++ b/headless/lib/browser/headless_content_browser_client.h
@@ -38,6 +38,18 @@ class HeadlessContentBrowserClient : public content::ContentBrowserClient {
   void AppendExtraCommandLineSwitches(base::CommandLine* command_line,
                                       int child_process_id) override;
 
+  void AllowCertificateError(
+      content::WebContents* web_contents,
+      int cert_error,
+      const net::SSLInfo& ssl_info,
+      const GURL& request_url,
+      content::ResourceType resource_type,
+      bool overridable,
+      bool strict_enforcement,
+      bool expired_previous_decision,
+      const base::Callback<void(content::CertificateRequestResultType)>&
+          callback) override;
+
   void ResourceDispatcherHostCreated() override;
 
  private: