Move Speak() in accessibility_utils, speak enable and disable strings when

chrome/browser/chromeos/accessibility_util.h

Index: chrome/browser/chromeos/accessibility_util.h
diff --git a/chrome/browser/chromeos/accessibility_util.h b/chrome/browser/chromeos/accessibility_util.h
index b529b49d36e8a1b7c70d0a9c2bc2f2e0c9ad9cec..7bfb5f4732ecede1493b17261dcd5159ed3864f5 100644
--- a/chrome/browser/chromeos/accessibility_util.h
+++ b/chrome/browser/chromeos/accessibility_util.h
@@ -21,6 +21,9 @@ void EnableAccessibility(bool enabled, WebUI* login_web_ui);
 // EnableAccessibility, above.
 void ToggleAccessibility(WebUI* login_web_ui);
 
+// Speaks the specified string.
+void Speak(const char* speak_str, bool queue, bool interruptible);
+
 }  // namespace accessibility
 }  // namespace chromeos