Wait for store flush in CookieMonster::Delete*Task

net/cookies/cookie_monster_unittest.cc

Index: net/cookies/cookie_monster_unittest.cc
diff --git a/net/cookies/cookie_monster_unittest.cc b/net/cookies/cookie_monster_unittest.cc
index d6fce6c3367cb0b7878ca1f4910c43ed6b5779f0..06cf441bcb45c3e6a3c8b01565c85947597336d1 100644
--- a/net/cookies/cookie_monster_unittest.cc
+++ b/net/cookies/cookie_monster_unittest.cc
@@ -50,7 +50,10 @@ class NewMockPersistentCookieStore
   MOCK_METHOD1(AddCookie, void(const CanonicalCookie& cc));
   MOCK_METHOD1(UpdateCookieAccessTime, void(const CanonicalCookie& cc));
   MOCK_METHOD1(DeleteCookie, void(const CanonicalCookie& cc));
-  MOCK_METHOD1(Flush, void(const base::Closure& callback));
+  virtual void Flush(const base::Closure& callback) {
+    if (!callback.is_null())
+      base::MessageLoop::current()->PostTask(FROM_HERE, callback);
+  }
   MOCK_METHOD0(SetForceKeepSessionState, void());
 
  private: