Fix broken unit-test.

chrome/browser/safe_browsing/download_protection_service_unittest.cc

Index: chrome/browser/safe_browsing/download_protection_service_unittest.cc
diff --git a/chrome/browser/safe_browsing/download_protection_service_unittest.cc b/chrome/browser/safe_browsing/download_protection_service_unittest.cc
index c293842ddbd4281f96eee264d042b8a63a243b6f..f82e1243bd4b6b2e131089c9daab6d102b5eaaf4 100644
--- a/chrome/browser/safe_browsing/download_protection_service_unittest.cc
+++ b/chrome/browser/safe_browsing/download_protection_service_unittest.cc
@@ -661,8 +661,6 @@ TEST_F(DownloadProtectionServiceTest, TestDownloadRequestTimeout) {
       info,
       base::Bind(&DownloadProtectionServiceTest::CheckDoneCallback,
                  base::Unretained(this)));
-  // Run the message loop(s) until SendRequest is called.
-  FlushThreadMessageLoops();
 
   // The request should time out because the HTTP request hasn't returned
   // anything yet.