All SpokenFeedback tests hand in ChromeOS dbg.

TBR=jamescook@chromium.org

Bug: 872267
Change-Id: I8ff0cf1d3615bb73c04b5342a96c24f0c914fe75
Reviewed-on: https://chromium-review.googlesource.com/1167294Reviewed-by: Rune Lillesveen <futhark@chromium.org>
Commit-Queue: Rune Lillesveen <futhark@chromium.org>
Cr-Commit-Position: refs/heads/master@{#581559}

chrome/browser/chromeos/accessibility/spoken_feedback_browsertest.cc

@@ -58,6 +58,10 @@ using extensions::api::braille_display_private::StubBrailleController;
 
 namespace chromeos {
 
+// All tests hang in EnableChromeVox() and times out on ChromeOS dbg.
+// https://crbug.com/872267
+#if defined(NDEBUG) || !defined(OS_CHROMEOS)
+
 //
 // Spoken feedback tests only in a logged in user's window.
 //
@@ -783,4 +787,6 @@ IN_PROC_BROWSER_TEST_F(OobeSpokenFeedbackTest, DISABLED_SpokenFeedbackInOobe) {
                                  "Combo box * of *"));
 }
 
+#endif  //  defined(NDEBUG) || !defined(OS_CHROMEOS)
+
 }  // namespace chromeos