Promote CookieMonster::DeleteCanonicalCookieAsync to CookieStore.

ios/net/cookies/cookie_store_ios_unittest.mm

 // Copyright 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 "ios/net/cookies/cookie_store_ios.h"
 
 #import <Foundation/Foundation.h>
 
 #include "base/bind_helpers.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 116 matching lines @@
     store_->GetAllCookiesAsync(callback);
   }
 
   void DeleteCookieAsync(const GURL& url,
                          const std::string& cookie_name,
                          const base::Closure& callback) override {
     RoundTrip();
     store_->DeleteCookieAsync(url, cookie_name, callback);
   }
 
+  void DeleteCanonicalCookieAsync(
+      const CanonicalCookie& cookie,
+      const DeleteCallback& callback) override {
+    RoundTrip();
+    store_->DeleteCanonicalCookieAsync(cookie, callback);
+  }
+
   net::CookieMonster* GetCookieMonster() override { return nullptr; }
 
   void DeleteAllCreatedBetweenAsync(const base::Time& delete_begin,
                                     const base::Time& delete_end,
                                     const DeleteCallback& callback) override {
     RoundTrip();
     store_->DeleteAllCreatedBetweenAsync(delete_begin, delete_end, callback);
   }
 
   void DeleteAllCreatedBetweenForHostAsync(
@@ skipping 833 matching lines @@
   EXPECT_EQ(2U, cookies.size());
   // this deletes the callback
   handle.reset();
   SetSystemCookie(kTestCookieURL, "abc", "jkl");
   EXPECT_EQ(2U, cookies.size());
   DeleteSystemCookie(kTestCookieURL, "abc");
   store_->UnSynchronize();
 }
 
 }  // namespace net