Add UMA histogram to count hard revokes of user certificate error decisions.

chrome/browser/ui/website_settings/website_settings.h

Index: chrome/browser/ui/website_settings/website_settings.h
diff --git a/chrome/browser/ui/website_settings/website_settings.h b/chrome/browser/ui/website_settings/website_settings.h
index 5b571e6165262ab01d24a389546f608beb7e5e7a..021d0d8ececaed35270d566a9d217397061ab6bb 100644
--- a/chrome/browser/ui/website_settings/website_settings.h
+++ b/chrome/browser/ui/website_settings/website_settings.h
@@ -93,6 +93,9 @@ class WebsiteSettings : public TabSpecificContentSettings::SiteDataObserver {
   // This method is called by the UI when the UI is closing.
   void OnUIClosing();
 
+  // This method is called when the SSL decisions revoke button is pressed.

[Peter Kasting, 2014/08/22 22:44:00]

Nit: "SSL decisions revoke button" feels a little confusing and awkward. 
"Revoke SSL error bypass button"?  I dunno.  (Applies to function name and to
other files too.)

[jww, 2014/08/22 22:56:39]

Done.

+  void OnSSLDecisionsRevokeButtonPressed();
+
   // Accessors.
   SiteConnectionStatus site_connection_status() const {
     return site_connection_status_;
@@ -116,10 +119,6 @@ class WebsiteSettings : public TabSpecificContentSettings::SiteDataObserver {
     return organization_name_;
   }
 
-  ChromeSSLHostStateDelegate* chrome_ssl_host_state_delegate() {
-    return chrome_ssl_host_state_delegate_;
-  }
-
   // SiteDataObserver implementation.
   virtual void OnSiteDataAccessed() OVERRIDE;
 
@@ -219,6 +218,8 @@ class WebsiteSettings : public TabSpecificContentSettings::SiteDataObserver {
   // decisions by users.
   ChromeSSLHostStateDelegate* chrome_ssl_host_state_delegate_;
 
+  bool did_revoke_user_ssl_decisions_;
+
   DISALLOW_COPY_AND_ASSIGN(WebsiteSettings);
 };