Re-land: Toggle spoken feedback if two fingers are held down.

chrome/browser/chromeos/accessibility/accessibility_manager.h

Index: chrome/browser/chromeos/accessibility/accessibility_manager.h
diff --git a/chrome/browser/chromeos/accessibility/accessibility_manager.h b/chrome/browser/chromeos/accessibility/accessibility_manager.h
index 916a336614b052035c5e325c8b3cddabc9e210e4..87684cbe1449466f9987428bee65d6ee29581f9c 100644
--- a/chrome/browser/chromeos/accessibility/accessibility_manager.h
+++ b/chrome/browser/chromeos/accessibility/accessibility_manager.h
@@ -250,6 +250,13 @@ class AccessibilityManager
   // Notify accessibility when locale changes occur.
   void OnLocaleChanged();
 
+  // Whether or not to enable toggling spoken feedback via holding down
+  // two fingers on the screen.
+  bool ShouldToggleSpokenFeedbackViaTouch();
+
+  // Play tick sound indicating spoken feedback will be toggled after countdown.
+  bool PlaySpokenFeedbackToggleCountdown(int tick_count);
+
   // Plays an earcon. Earcons are brief and distinctive sounds that indicate
   // when their mapped event has occurred. The sound key enums can be found in
   // chromeos/audio/chromeos_sounds.h.