[Cronet] Don't spam log if system cookie doesn't have creation time.

components/cronet/ios/test/cronet_http_test.mm

 // Copyright 2015 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.
 
 #import <Cronet/Cronet.h>
 #import <Foundation/Foundation.h>
 
 #include <stdint.h>
 
 #include "base/logging.h"
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   [systemCookieStorage setCookie:systemCookie];
 
   StartDataTaskAndWaitForCompletion([session_ dataTaskWithURL:echoCookieUrl]);
   [systemCookieStorage deleteCookie:systemCookie];
   EXPECT_EQ(nil, [delegate_ error]);
   // Verify that cookie set in system store was sent to the serever.
   EXPECT_TRUE([[delegate_ responseBody] containsString:cookieName]);
   EXPECT_TRUE([[delegate_ responseBody] containsString:cookieValue]);
 }
 
+TEST_F(HttpTest, SystemCookieWithNullCreationTime) {
+  const char kCookieHeader[] = "Cookie";
+  NSString* cookieName = [NSString
+      stringWithFormat:@"SetSystemCookie-%@", [[NSUUID UUID] UUIDString]];
+  NSString* cookieValue = [[NSUUID UUID] UUIDString];
+  NSHTTPCookieStorage* systemCookieStorage =
+      [NSHTTPCookieStorage sharedHTTPCookieStorage];
+  NSURL* echoCookieUrl =
+      net::NSURLWithGURL(GURL(TestServer::GetEchoHeaderURL(kCookieHeader)));
+  NSHTTPCookie* nullCreationTimeCookie = [NSHTTPCookie cookieWithProperties:@{
+    NSHTTPCookiePath : [echoCookieUrl path],
+    NSHTTPCookieName : cookieName,
+    NSHTTPCookieValue : cookieValue,
+    NSHTTPCookieDomain : [echoCookieUrl host],
+    @"Created" : [NSNumber numberWithDouble:0.0],
+  }];
+  [systemCookieStorage setCookie:nullCreationTimeCookie];
+  NSHTTPCookie* normalCookie = [NSHTTPCookie cookieWithProperties:@{
+    NSHTTPCookiePath : [echoCookieUrl path],
+    NSHTTPCookieName : [cookieName stringByAppendingString:@"-normal"],
+    NSHTTPCookieValue : cookieValue,
+    NSHTTPCookieDomain : [echoCookieUrl host],
+  }];
+  [systemCookieStorage setCookie:normalCookie];
+  StartDataTaskAndWaitForCompletion([session_ dataTaskWithURL:echoCookieUrl]);
+  [systemCookieStorage deleteCookie:nullCreationTimeCookie];
+  [systemCookieStorage deleteCookie:normalCookie];
+  EXPECT_EQ(nil, [delegate_ error]);
+  // Verify that cookie set in system store was sent to the serever.
+  EXPECT_TRUE([[delegate_ responseBody] containsString:cookieName]);
+  EXPECT_TRUE([[delegate_ responseBody] containsString:cookieValue]);
+}
+
 TEST_F(HttpTest, FilterOutRequest) {
   NSURL* url =
       net::NSURLWithGURL(GURL(TestServer::GetEchoHeaderURL("User-Agent")));
   __block BOOL block_used = NO;
   NSURLSessionDataTask* task = [session_ dataTaskWithURL:url];
   [Cronet setRequestFilterBlock:^(NSURLRequest* request) {
     block_used = YES;
     EXPECT_EQ([request URL], url);
     return NO;
   }];
   StartDataTaskAndWaitForCompletion(task);
   EXPECT_TRUE(block_used);
   EXPECT_EQ(nil, [delegate_ error]);
   EXPECT_FALSE([[delegate_ responseBody]
       containsString:base::SysUTF8ToNSString(kUserAgent)]);
   EXPECT_TRUE([[delegate_ responseBody] containsString:@"CFNetwork"]);
 }
 
 }  // namespace cronet