Working proof of concept of select to speak

chrome/browser/chromeos/accessibility/spoken_feedback_event_rewriter.cc

Index: chrome/browser/chromeos/accessibility/spoken_feedback_event_rewriter.cc
diff --git a/chrome/browser/chromeos/accessibility/spoken_feedback_event_rewriter.cc b/chrome/browser/chromeos/accessibility/spoken_feedback_event_rewriter.cc
index f7421b4bb1933999e8f91c9cd0c0e354a9af6bdf..0f7995f02be82e93ad22f614a3fe8a801de71582 100644
--- a/chrome/browser/chromeos/accessibility/spoken_feedback_event_rewriter.cc
+++ b/chrome/browser/chromeos/accessibility/spoken_feedback_event_rewriter.cc
@@ -116,6 +116,19 @@ ui::EventRewriteStatus SpokenFeedbackEventRewriter::RewriteEvent(
   if (!delegate_->IsSpokenFeedbackEnabled())
     return ui::EVENT_REWRITE_CONTINUE;
 
+  if (event.IsMouseEvent()) {
+    const auto& mouse_event = static_cast<const ui::MouseEvent&>(event);
+    scoped_ptr<ui::MouseEvent> ax_mouse_event(
+        new ui::MouseEvent(mouse_event.type(),
+                           mouse_event.location(),
+                           mouse_event.root_location(),
+                           mouse_event.time_stamp(),
+                           mouse_event.flags() | ui::EF_TOUCH_ACCESSIBILITY,
+                           mouse_event.changed_button_flags()));
+    *new_event = ax_mouse_event.Pass();
+    return ui::EVENT_REWRITE_REWRITTEN;
+  }
+
   if ((event.type() != ui::ET_KEY_PRESSED &&
        event.type() != ui::ET_KEY_RELEASED))
     return ui::EVENT_REWRITE_CONTINUE;