Delete prefix-set if side-effect-free whitelist not enabled.

chrome/browser/safe_browsing/safe_browsing_database.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/safe_browsing/safe_browsing_database.h"
 
 #include <algorithm>
 #include <iterator>
 
 #include "base/bind.h"
@@ skipping 586 matching lines @@
       UMA_HISTOGRAM_TIMES("SB2.SideEffectFreeWhitelistPrefixSetLoad",
                           base::TimeTicks::Now() - before);
       if (!side_effect_free_whitelist_prefix_set_.get())
         RecordFailure(FAILURE_SIDE_EFFECT_FREE_WHITELIST_PREFIX_SET_READ);
     }
   } else {
     // Delete any files of the side-effect free sidelist that may be around
     // from when it was previously enabled.
     SafeBrowsingStoreFile::DeleteStore(
         SideEffectFreeWhitelistDBFilename(filename_base));
+    base::DeleteFile(
+        PrefixSetForFilename(SideEffectFreeWhitelistDBFilename(filename_base)),
+        false);
   }
 
   if (ip_blacklist_store_.get()) {
     ip_blacklist_filename_ = IpBlacklistDBFilename(filename_base);
     ip_blacklist_store_->Init(
         ip_blacklist_filename_,
         base::Bind(&SafeBrowsingDatabaseNew::HandleCorruptDatabase,
                    base::Unretained(this)));
     DVLOG(1) << "SafeBrowsingDatabaseNew read ip blacklist: "
              << ip_blacklist_filename_.value();
@@ skipping 952 matching lines @@
 bool SafeBrowsingDatabaseNew::IsMalwareIPMatchKillSwitchOn() {
   SBFullHash malware_kill_switch = SBFullHashForString(kMalwareIPKillSwitchUrl);
   std::vector<SBFullHash> full_hashes;
   full_hashes.push_back(malware_kill_switch);
   return ContainsWhitelistedHashes(csd_whitelist_, full_hashes);
 }
 
 bool SafeBrowsingDatabaseNew::IsCsdWhitelistKillSwitchOn() {
   return csd_whitelist_.second;
 }