Disable NotificationsApiTest.TestBasicUsage for Linux debug build

chrome/browser/extensions/api/notifications/notifications_apitest.cc

Index: chrome/browser/extensions/api/notifications/notifications_apitest.cc
diff --git a/chrome/browser/extensions/api/notifications/notifications_apitest.cc b/chrome/browser/extensions/api/notifications/notifications_apitest.cc
index 39abdd96447dad68e53b172977c8e7e357a62fd0..3d372dfb4f1d18255e89c22523cf77d51936c852 100644
--- a/chrome/browser/extensions/api/notifications/notifications_apitest.cc
+++ b/chrome/browser/extensions/api/notifications/notifications_apitest.cc
@@ -188,7 +188,13 @@ class NotificationsApiTest : public ExtensionApiTest {
 
 }  // namespace
 
-IN_PROC_BROWSER_TEST_F(NotificationsApiTest, TestBasicUsage) {
+// http://crbug.com/691913
+#if defined(OS_LINUX) && !defined(NDEBUG)
+#define MAYBE_TestBasicUsage DISABLED_TestBasicUsage
+#else
+#define MAYBE_TestBasicUsage TestBasicUsage
+#endif
+IN_PROC_BROWSER_TEST_F(NotificationsApiTest, MAYBE_TestBasicUsage) {
   ASSERT_TRUE(RunExtensionTest("notifications/api/basic_usage")) << message_;
 }