Remove "Go Back/Forward" from keyboard overlay

chrome/browser/ui/webui/chromeos/keyboard_overlay_ui.cc

Index: chrome/browser/ui/webui/chromeos/keyboard_overlay_ui.cc
diff --git a/chrome/browser/ui/webui/chromeos/keyboard_overlay_ui.cc b/chrome/browser/ui/webui/chromeos/keyboard_overlay_ui.cc
index 412a39ae46b88efe1baac928d5e13b06f40486a2..60e40df59abc3fe4bd6d8fd8e2d536bebf04e09a 100644
--- a/chrome/browser/ui/webui/chromeos/keyboard_overlay_ui.cc
+++ b/chrome/browser/ui/webui/chromeos/keyboard_overlay_ui.cc
@@ -11,11 +11,13 @@
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
+#include "base/feature_list.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/profiles/profile.h"
+#include "chrome/common/chrome_features.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/grit/chromium_strings.h"
@@ -307,6 +309,9 @@ content::WebUIDataSource* CreateKeyboardOverlayUIHTMLSource(Profile* profile) {
   ash::DisplayManager* display_manager = shell->display_manager();
   source->AddBoolean("keyboardOverlayIsDisplayUIScalingEnabled",
                      display_manager->IsDisplayUIScalingEnabled());
+  source->AddBoolean(
+      "backspaceGoesBackFeatureEnabled",
+      base::FeatureList::IsEnabled(features::kBackspaceGoesBackFeature));
   source->SetJsonPath("strings.js");
   source->AddResourcePath("keyboard_overlay.js", IDR_KEYBOARD_OVERLAY_JS);
   source->SetDefaultResource(IDR_KEYBOARD_OVERLAY_HTML);