Remove a declaration for an unimplemented function in TransportSecurityState.

net/base/transport_security_state.h

Index: net/base/transport_security_state.h
diff --git a/net/base/transport_security_state.h b/net/base/transport_security_state.h
index a83788787fba23a22965821b41d7198f2ea74527..d2c8e2ba3d27fcef26920b531fc0e1066898ad6e 100644
--- a/net/base/transport_security_state.h
+++ b/net/base/transport_security_state.h
@@ -82,11 +82,6 @@ class NET_EXPORT TransportSecurityState
     // Used to see if a dynamic DomainState should override a preloaded one.
     bool IsMoreStrict(const DomainState& other);
 
-    // ShouldCertificateErrorsBeFatal returns true iff, given the |mode| of this
-    // DomainState, certificate errors on this domain should be fatal (i.e. no
-    // user bypass).
-    bool ShouldCertificateErrorsBeFatal() const;
-
     // ShouldRedirectHTTPToHTTPS returns true iff, given the |mode| of this
     // DomainState, HTTP requests should be internally redirected to HTTPS.
     bool ShouldRedirectHTTPToHTTPS() const;