GTTF: Run perf tests serially

content/test/run_all_perftests.cc

Index: content/test/run_all_perftests.cc
diff --git a/content/test/run_all_perftests.cc b/content/test/run_all_perftests.cc
index d3d1d3a6e871cdceec425e7afd9daa2d07481427..77aa196cd6d56d35fff8e41a405f885b5cb7f96f 100644
--- a/content/test/run_all_perftests.cc
+++ b/content/test/run_all_perftests.cc
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "base/bind.h"
+#include "base/test/launcher/unit_test_launcher.h"
 #include "content/public/test/unittest_test_suite.h"
 #include "content/test/content_test_suite.h"
 
@@ -12,5 +14,7 @@ int main(int argc, char** argv) {
   // Always run the perf tests serially, to avoid distorting
   // perf measurements with randomness resulting from running
   // in parallel.
-  return test_suite.Run();
+  return base::LaunchUnitTestsSerially(
+      argc, argv, base::Bind(&content::UnitTestTestSuite::Run,
+                             base::Unretained(&test_suite)));
 }