For unit tests, track additions to AtExitManager and warn.

base/test/test_switches.cc

Index: base/test/test_switches.cc
diff --git a/base/test/test_switches.cc b/base/test/test_switches.cc
index 79fbad12fd6dc9288fb80b020b008dd41b3941b0..f5ec293b0c05868719c3421a912b9b805a3feca2 100644
--- a/base/test/test_switches.cc
+++ b/base/test/test_switches.cc
@@ -4,9 +4,20 @@
 
 #include "base/test/test_switches.h"
 
+namespace switches {
+
+// Run Chromium in single process mode.
+const char kSingleProcessChromeFlag[]   = "single-process";
+
+// Run the tests and the launcher in the same process. Useful for debugging a
+// specific test in a debugger.
+const char kSingleProcessTestsFlag[]   = "single_process";
+
 // Time (in milliseconds) that the tests should wait before timing out.
 // TODO(phajdan.jr): Clean up the switch names.
-const char switches::kTestLargeTimeout[] = "test-large-timeout";
-const char switches::kTestTinyTimeout[] = "test-tiny-timeout";
-const char switches::kUiTestActionTimeout[] = "ui-test-action-timeout";
-const char switches::kUiTestActionMaxTimeout[] = "ui-test-action-max-timeout";
+const char kTestLargeTimeout[] = "test-large-timeout";
+const char kTestTinyTimeout[] = "test-tiny-timeout";
+const char kUiTestActionTimeout[] = "ui-test-action-timeout";
+const char kUiTestActionMaxTimeout[] = "ui-test-action-max-timeout";
+
+}  // namespace switches