Make the WinOOPSelectFileDialog feature disabled by default

The feature was incorrectly committed as enabled by default in this CL:
https://chromium-review.googlesource.com/c/chromium/src/+/1241563

Bug: 884075
Tbr: sky@chromium.org
Change-Id: I8d7df2adcd4d774684d1e24ce3b109ea43e7e7cb
Reviewed-on: https://chromium-review.googlesource.com/c/1305879Reviewed-by: Patrick Monette <pmonette@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: Patrick Monette <pmonette@chromium.org>
Cr-Commit-Position: refs/heads/master@{#603612}

chrome/browser/win/chrome_select_file_dialog_factory.cc

@@ -26,7 +26,7 @@ namespace {
 // This feature controls whether or not file dialogs are executed in a utility
 // process on Windows.
 base::Feature kWinOOPSelectFileDialog{"WinOOPSelectFileDialog",
-                                      base::FEATURE_ENABLED_BY_DEFAULT};
+                                      base::FEATURE_DISABLED_BY_DEFAULT};
 }  // namespace
 
 std::unique_ptr<service_manager::Connector> GetConnectorOnUIThread() {