Fix how --gtest_filter interacts with PRE_ tests

BUG=371785
R=sky@chromium.org

Review URL: https://codereview.chromium.org/445953002

Cr-Commit-Position: refs/heads/master@{#288298}
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@288298 0039d316-1c4b-4281-b951-d872f2087c98

base/test/launcher/test_launcher.cc

@@ -805,6 +805,9 @@ void TestLauncher::RunTests() {
           continue;
       }
 
+      if (!launcher_delegate_->ShouldRunTest(test_case, test_info))
+        continue;
+
       // Skip the test that doesn't match the filter (if given).
       if (!positive_test_filter_.empty()) {
         bool found = false;
@@ -828,9 +831,6 @@ void TestLauncher::RunTests() {
       if (excluded)
         continue;
 
-      if (!launcher_delegate_->ShouldRunTest(test_case, test_info))
-        continue;
-
       if (base::Hash(test_name) % total_shards_ !=
           static_cast<uint32>(shard_index_)) {
         continue;