Adding unit test for ChromeBrowserMainPartsWin::RegisterApplicationRestart

Bug: 1122724
Change-Id: I5cc4574546a5ca4fed41dd8f0c50f17d70a7034b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2380583Reviewed-by: Lei Zhang <thestig@chromium.org>
Reviewed-by: Michael Wasserman <msw@chromium.org>
Commit-Queue: Elaine Chien <elainec@chromium.org>
Cr-Commit-Position: refs/heads/master@{#802767}

chrome/browser/chrome_browser_main_win_unittest.cc

@@ -87,3 +87,11 @@ TEST(ChromeBrowserMainWinTest, GetRestartCommand) {
             L" --enable-sandbox-audio"
             L" --restore-last-session");
 }
+
+// Test RegisterApplicationRestart to make sure there are no crashes.
+TEST(ChromeBrowserMainWinTest, RegisterRestart) {
+  const base::CommandLine command_line = base::CommandLine::FromString(
+      L"chrome.exe --enable-features=Exp2 --enable-foo -- "
+      L"http://www.chromium.org");
+  ChromeBrowserMainPartsWin::RegisterApplicationRestart(command_line);
+}