Add certificate error handling to devtools.

content/browser/web_contents/web_contents_impl.h

Index: content/browser/web_contents/web_contents_impl.h
diff --git a/content/browser/web_contents/web_contents_impl.h b/content/browser/web_contents/web_contents_impl.h
index fd1221aa0bcbf335288b9752de6481035cea18c6..7f9602f5cc9caebe27a43e1f51a4a751b10cd979 100644
--- a/content/browser/web_contents/web_contents_impl.h
+++ b/content/browser/web_contents/web_contents_impl.h
@@ -328,6 +328,8 @@ class CONTENT_EXPORT WebContentsImpl
       WebContents* outer_web_contents,
       RenderFrameHost* outer_contents_frame) override;
   void DidChangeVisibleSecurityState() override;
+  bool NotifyCertificateError(
+      base::Callback<void(content::CertificateRequestResultType)>) override;
   void Stop() override;
   WebContents* Clone() override;
   void ReloadFocusedFrame(bool bypass_cache) override;