Add certificate error handling to devtools.

content/public/browser/web_contents.cc

Index: content/public/browser/web_contents.cc
diff --git a/content/public/browser/web_contents.cc b/content/public/browser/web_contents.cc
index fa0afb545df985e11e8be9964e843e199d298675..c8cb7b4f8573534dbf009e805f35326eeedf99ff 100644
--- a/content/public/browser/web_contents.cc
+++ b/content/public/browser/web_contents.cc
@@ -37,4 +37,8 @@ WebContents::CreateParams::CreateParams(const CreateParams& other) = default;
 WebContents::CreateParams::~CreateParams() {
 }
 
+bool WebContents::NotifyCertificateError(CertErrorCallback handler) {
+  return false;
+}
+
 }  // namespace content