Support Shift+Search+Arrows to navigate and Control to silence speech everywhere

chrome/browser/ui/ash/chrome_shell_delegate_chromeos.cc

Index: chrome/browser/ui/ash/chrome_shell_delegate_chromeos.cc
diff --git a/chrome/browser/ui/ash/chrome_shell_delegate_chromeos.cc b/chrome/browser/ui/ash/chrome_shell_delegate_chromeos.cc
index 81809c8f64762b37ef02e02fd10c1e641acf8f7c..9239be1fed6c54a5bb23f20e543a4e8a48191a59 100644
--- a/chrome/browser/ui/ash/chrome_shell_delegate_chromeos.cc
+++ b/chrome/browser/ui/ash/chrome_shell_delegate_chromeos.cc
@@ -26,6 +26,7 @@
 #include "chrome/browser/chromeos/system/ash_system_tray_delegate.h"
 #include "chrome/browser/extensions/api/terminal/terminal_extension_helper.h"
 #include "chrome/browser/profiles/profile_manager.h"
+#include "chrome/browser/speech/tts_controller.h"
 #include "chrome/browser/ui/ash/caps_lock_delegate_chromeos.h"
 #include "chrome/browser/ui/ash/window_positioner.h"
 #include "chrome/browser/ui/browser.h"
@@ -211,6 +212,10 @@ bool ChromeShellDelegate::ShouldAlwaysShowAccessibilityMenu() const {
       user_pref_service->GetBoolean(prefs::kShouldAlwaysShowAccessibilityMenu);
 }
 
+void ChromeShellDelegate::SilenceSpokenFeedback() const {
+  TtsController::GetInstance()->Stop();
+}
+
 ash::SystemTrayDelegate* ChromeShellDelegate::CreateSystemTrayDelegate() {
   return chromeos::CreateSystemTrayDelegate();
 }