Implement unit test specific test launcher timeout

base/test/test_timeouts.h

Index: base/test/test_timeouts.h
diff --git a/base/test/test_timeouts.h b/base/test/test_timeouts.h
index 2819e4a1c1170dab9332fb6b729707ca5058b6d7..5f7926417c0aa2aabd35aa0fb9be29ce4a5b5461 100644
--- a/base/test/test_timeouts.h
+++ b/base/test/test_timeouts.h
@@ -38,7 +38,14 @@ class TestTimeouts {
     return base::TimeDelta::FromMilliseconds(action_max_timeout_ms_);
   }
 
-  // Timeout for a single test launched used built-in test launcher.
+  // Timeout for a single unit test launched using built-in test launcher.
+  // Do not use outside of the test launcher.
+  static base::TimeDelta test_launcher_unit_timeout() {
+    DCHECK(initialized_);
+    return base::TimeDelta::FromMilliseconds(test_launcher_unit_timeout_ms_);
+  }
+
+  // Timeout for a single test launched using built-in test launcher.
   // Do not use outside of the test launcher.
   static base::TimeDelta test_launcher_timeout() {
     DCHECK(initialized_);
@@ -51,6 +58,7 @@ class TestTimeouts {
   static int tiny_timeout_ms_;
   static int action_timeout_ms_;
   static int action_max_timeout_ms_;
+  static int test_launcher_unit_timeout_ms_;
   static int test_launcher_timeout_ms_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(TestTimeouts);