Re-write many calls to WrapUnique() with MakeUnique()

ios/net/cookies/cookie_store_ios_unittest.mm

Index: ios/net/cookies/cookie_store_ios_unittest.mm
diff --git a/ios/net/cookies/cookie_store_ios_unittest.mm b/ios/net/cookies/cookie_store_ios_unittest.mm
index 479f926eb496b4a2fa4d1200eee66790108d6351..fa05e77fbd3e8b85ce91f5f4cc0bbf62cb127e4c 100644
--- a/ios/net/cookies/cookie_store_ios_unittest.mm
+++ b/ios/net/cookies/cookie_store_ios_unittest.mm
@@ -53,7 +53,7 @@ struct CookieStoreIOSTestTraits {
 
 struct InactiveCookieStoreIOSTestTraits {
   static std::unique_ptr<net::CookieStore> Create() {
-    return base::WrapUnique(new CookieStoreIOS(nullptr));
+    return base::MakeUnique<CookieStoreIOS>(nullptr);
   }
 
   static const bool is_cookie_monster = false;
@@ -205,7 +205,7 @@ class RoundTripTestCookieStore : public net::CookieStore {
 struct RoundTripTestCookieStoreTraits {
   static std::unique_ptr<net::CookieStore> Create() {
     ClearCookies();
-    return base::WrapUnique(new RoundTripTestCookieStore());
+    return base::MakeUnique<RoundTripTestCookieStore>();
   }
 
   static const bool is_cookie_monster = false;