Fixed SetURLWithMaxPath test. Previous parameters incorrect

Change-Id: I4b44ac7e7cb067bfd6679322ed3af245d3d4dbc5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2427106
Auto-Submit: Elaine Chien <elainec@chromium.org>
Reviewed-by: Darwin Huang <huangdarwin@chromium.org>
Commit-Queue: Darwin Huang <huangdarwin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#810046}

ui/base/dragdrop/os_exchange_data_win_unittest.cc

@@ -930,7 +930,7 @@ TEST_F(OSExchangeDataWinTest, CFHtml) {
 
 TEST_F(OSExchangeDataWinTest, SetURLWithMaxPath) {
   OSExchangeData data;
-  std::wstring long_title(L'a', MAX_PATH + 1);
+  std::wstring long_title(MAX_PATH + 1, L'a');
   data.SetURL(GURL("http://google.com"), long_title);
 }