Revert "Disable SubresourceFilterSafeBrowsingActivationThrottleTest.NoConfigs"

This reverts commit 7172c7f2.

Reason for revert: Re-enabling to catch flaky run loop tasks with
additional run loop debug information. New run loop timeout information
added as part of crbug/1010061.

Original change's description:
> Disable SubresourceFilterSafeBrowsingActivationThrottleTest.NoConfigs
>
> TBR=hbos@chromium.org
> NOTRY=true
>
> Bug: 1010020
> Change-Id: Ia15694adcd86238dd59b7775d9d6a25ee3d2cfcf
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1833118
> Reviewed-by: Xida Chen <xidachen@chromium.org>
> Commit-Queue: Xida Chen <xidachen@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#701548}

TBR=hbos@chromium.org,xidachen@chromium.org

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

Bug: 1010020
Change-Id: I09daf7f0ae76bacf6826334f250b10a2d1a4c3ab
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1843913Reviewed-by: Xida Chen <xidachen@chromium.org>
Commit-Queue: Justin Miron <justinmiron@google.com>
Cr-Commit-Position: refs/heads/master@{#703351}

components/subresource_filter/content/browser/subresource_filter_safe_browsing_activation_throttle_unittest.cc

@@ -445,12 +445,7 @@ class SubresourceFilterSafeBrowsingActivationThrottleScopeTest
       SubresourceFilterSafeBrowsingActivationThrottleScopeTest);
 };
 
-#if defined(OS_MACOSX)
-#define MAYBE_NoConfigs DISABLED_NoConfigs
-#else
-#define MAYBE_NoConfigs NoConfigs
-#endif
-TEST_F(SubresourceFilterSafeBrowsingActivationThrottleTest, MAYBE_NoConfigs) {
+TEST_F(SubresourceFilterSafeBrowsingActivationThrottleTest, NoConfigs) {
   scoped_configuration()->ResetConfiguration(std::vector<Configuration>());
   SimulateNavigateAndCommit({GURL(kURL)}, main_rfh());
   EXPECT_EQ(mojom::ActivationLevel::kDisabled,