Add SSlHostState::Clear()

content/browser/ssl/ssl_host_state.h

Index: content/browser/ssl/ssl_host_state.h
diff --git a/content/browser/ssl/ssl_host_state.h b/content/browser/ssl/ssl_host_state.h
index b051b0532303130f859f42ec6467a40cca8c1cd3..cca697308c2a88c2038517de6a233f7aaf56bc0d 100644
--- a/content/browser/ssl/ssl_host_state.h
+++ b/content/browser/ssl/ssl_host_state.h
@@ -51,6 +51,9 @@ class CONTENT_EXPORT SSLHostState
   // Records that |cert| is not permitted to be used for |host| in the future.
   void AllowCertForHost(net::X509Certificate* cert, const std::string& host);
 
+  // Clear all allow/deny preferences.
+  void Clear();
+
   // Queries whether |cert| is allowed or denied for |host|.
   net::CertPolicy::Judgment QueryPolicy(
       net::X509Certificate* cert, const std::string& host);