Revert 145523 - Add a policy to disable proceeding through the Safe Browsing interstitials.

chrome/browser/safe_browsing/safe_browsing_blocking_page.h

Index: chrome/browser/safe_browsing/safe_browsing_blocking_page.h
===================================================================
--- chrome/browser/safe_browsing/safe_browsing_blocking_page.h	(revision 145621)
+++ chrome/browser/safe_browsing/safe_browsing_blocking_page.h	(working copy)
@@ -146,10 +146,6 @@
   // enabled, the report is scheduled to be sent on the |sb_service_|.
   void FinishMalwareDetails(int64 delay_ms);
 
-  // Returns the boolean value of the given |pref| from the PrefService of the
-  // Profile associated with |web_contents_|.
-  bool IsPrefEnabled(const char* pref);
-
   // A list of SafeBrowsingService::UnsafeResource for a tab that the user
   // should be warned about.  They are queued when displaying more than one
   // interstitial at a time.