Introduce base::TestSuite::DisableTests().

base/test/test_suite.h

Index: base/test/test_suite.h
diff --git a/base/test/test_suite.h b/base/test/test_suite.h
index 50cde8489bef85eb06638ba5ac9645efde8d33d8..8dd50263159175c2369f05b5075c39a2c6f92e38 100644
--- a/base/test/test_suite.h
+++ b/base/test/test_suite.h
@@ -35,6 +35,16 @@ class TestSuite {
 
   void CatchMaybeTests();
 
+  // Disables tests that match the |filter|. This gives the test suite an
+  // opportunity to disable tests at runtime. Must be called before Run()
+  // to take effect.
+  //
+  // For example, to disable "FooTest" when IsFooSupported() is false:
+  // if (!IsFooSupported())
+  //   DisableTests("FooTest.*");
+  // Run();
+  void DisableTests(const std::string& filter);
+
   void ResetCommandLine();
 
   void AddTestLauncherResultPrinter();