Remove stl_util's STLDeleteContainerPairSecondPointers.

chrome/browser/browsing_data/browsing_data_cookie_helper.h

Index: chrome/browser/browsing_data/browsing_data_cookie_helper.h
diff --git a/chrome/browser/browsing_data/browsing_data_cookie_helper.h b/chrome/browser/browsing_data/browsing_data_cookie_helper.h
index 5366a0fcdf72fab6b4050a7c55fcf312c1346e0d..ba30e26bd1990b58962537bfe4bd0f1ab0ed737d 100644
--- a/chrome/browser/browsing_data/browsing_data_cookie_helper.h
+++ b/chrome/browser/browsing_data/browsing_data_cookie_helper.h
@@ -78,7 +78,8 @@ class BrowsingDataCookieHelper
 // cookies.
 class CannedBrowsingDataCookieHelper : public BrowsingDataCookieHelper {
  public:
-  typedef std::map<GURL, canonical_cookie::CookieHashSet*> OriginCookieSetMap;
+  typedef std::map<GURL, std::unique_ptr<canonical_cookie::CookieHashSet>>
+      OriginCookieSetMap;
 
   explicit CannedBrowsingDataCookieHelper(
       net::URLRequestContextGetter* request_context);