Make ToggleImageButton into an accessible toggle button.

chrome/browser/chromeos/accessibility/spoken_feedback_browsertest.cc

Index: chrome/browser/chromeos/accessibility/spoken_feedback_browsertest.cc
diff --git a/chrome/browser/chromeos/accessibility/spoken_feedback_browsertest.cc b/chrome/browser/chromeos/accessibility/spoken_feedback_browsertest.cc
index 329f0179568f898772f8f66dde493d099406cb1b..c1db06d1561d9bb14ff305644d0cedf02f9b199d 100644
--- a/chrome/browser/chromeos/accessibility/spoken_feedback_browsertest.cc
+++ b/chrome/browser/chromeos/accessibility/spoken_feedback_browsertest.cc
@@ -667,6 +667,22 @@ IN_PROC_BROWSER_TEST_P(SpokenFeedbackTest, TouchExploreStatusTray) {
   EXPECT_EQ("Button", speech_monitor_.GetNextUtterance());
 }
 
+IN_PROC_BROWSER_TEST_F(LoggedInSpokenFeedbackTest, NavigateNotificationCenter) {
+  EnableChromeVox();
+
+  EXPECT_TRUE(PerformAcceleratorAction(ash::SHOW_MESSAGE_CENTER_BUBBLE));
+
+  // Wait for it to say "Notification Center, window".
+  while ("Notification Center, window" != speech_monitor_.GetNextUtterance()) {
+  }
+
+  // Tab until we get to the Do Not Disturb button.
+  SendKeyPress(ui::VKEY_TAB);
+  do {

[dmazzoni, 2016/07/21 17:05:57]

This looks incomplete?

+    std::string ut = speech_monitor_.GetNextUtterance();
+
+}
+
 //
 // Spoken feedback tests that run only in guest mode.
 //