Revert "Change default retries for components unittests to 0"

This reverts commit ed8151f9.

Reason for revert: suspected cause of increased CQ false rejection rate, https://bugs.chromium.org/p/chromium/issues/detail?id=1011915

Original change's description:
> Change default retries for components unittests to 0
> 
> Bug: 993428
> Change-Id: Id21490633dfb7ae92f73b0bdc9b2f81191f00ccb
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1801021
> Reviewed-by: Erik Chen <erikchen@chromium.org>
> Reviewed-by: Nico Weber <thakis@chromium.org>
> Commit-Queue: Ilia Samsonov <isamsonov@google.com>
> Cr-Commit-Position: refs/heads/master@{#700857}

TBR=thakis@chromium.org,erikchen@chromium.org,isamsonov@google.com

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: 993428
Change-Id: Ie9c97d3e250eb5789d7095dd145b66afddf4363d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1846805Reviewed-by: John Budorick <jbudorick@chromium.org>
Commit-Queue: John Budorick <jbudorick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#703806}

components/test/run_all_unittests.cc

@@ -5,5 +5,5 @@
 #include "components/test/components_test_suite.h"
 
 int main(int argc, char** argv) {
-  return base::LaunchUnitTests(argc, argv, GetLaunchCallback(argc, argv), 0U);
+  return base::LaunchUnitTests(argc, argv, GetLaunchCallback(argc, argv));
 }