Cleanup: Remove unused variables in chrome/ found by Scythe.

chrome/browser/safe_browsing/browser_features.cc

 // Copyright (c) 2011 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/browser_features.h"
 
 namespace safe_browsing {
 namespace features {
 const char kUrlHistoryVisitCount[] = "UrlHistoryVisitCount";
 const char kUrlHistoryTypedCount[] = "UrlHistoryTypedCount";
 const char kUrlHistoryLinkCount[] = "UrlHistoryLinkCount";
 const char kUrlHistoryVisitCountMoreThan24hAgo[] =
     "UrlHistoryVisitCountMoreThan24hAgo";
 const char kHttpHostVisitCount[] = "HttpHostVisitCount";
 const char kHttpsHostVisitCount[] = "HttpsHostVisitCount";
 const char kFirstHttpHostVisitMoreThan24hAgo[] =
     "FirstHttpHostVisitMoreThan24hAgo";
 const char kFirstHttpsHostVisitMoreThan24hAgo[] =
     "FirstHttpsHostVisitMoreThan24hAgo";
 
 const char kHostPrefix[] = "Host";
 const char kReferrer[] = "Referrer";
 const char kHasSSLReferrer[] = "HasSSLReferrer";
 const char kPageTransitionType[] = "PageTransitionType";
 const char kIsFirstNavigation[] = "IsFirstNavigation";
 const char kRedirectUrlMismatch[] = "RedirectUrlMismatch";
 const char kRedirect[] = "Redirect";
 const char kSecureRedirectValue[] = "SecureRedirect";
-const char kBadIpFetch[] = "BadIpFetch=";
 const char kHttpStatusCode[] = "HttpStatusCode";
 const char kSafeBrowsingMaliciousUrl[] = "SafeBrowsingMaliciousUrl=";
 const char kSafeBrowsingOriginalUrl[] = "SafeBrowsingOriginalUrl=";
 const char kSafeBrowsingIsSubresource[] = "SafeBrowsingIsSubresource";
 const char kSafeBrowsingThreatType[] = "SafeBrowsingThreatType";
 }  // namespace features
 }  // namespace safe_browsing