Pass through a flag indicating if help_app should be more accessible

Bug: b/174321021
Change-Id: Ia16533af50f24f3062ee3169b95b2ec3bb225514
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2591897
Auto-Submit: Dominic Mazzoni <dmazzoni@chromium.org>
Commit-Queue: Rachel Carpenter <carpenterr@chromium.org>
Reviewed-by: Rachel Carpenter <carpenterr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#837342}

chrome/browser/chromeos/web_applications/chrome_help_app_ui_delegate.cc

@@ -10,6 +10,7 @@
 #include "ash/public/cpp/tablet_mode.h"
 #include "base/system/sys_info.h"
 #include "chrome/browser/browser_process.h"
+#include "chrome/browser/chromeos/accessibility/accessibility_manager.h"
 #include "chrome/browser/chromeos/arc/arc_util.h"
 #include "chrome/browser/chromeos/assistant/assistant_util.h"
 #include "chrome/browser/chromeos/login/quick_unlock/quick_unlock_utils.h"
@@ -52,6 +53,13 @@ base::Optional<std::string> ChromeHelpAppUIDelegate::OpenFeedbackDialog() {
 
 void ChromeHelpAppUIDelegate::PopulateLoadTimeData(
     content::WebUIDataSource* source) {
+  // Enable accessibility mode (slower balloons) if either spoken feedback
+  // or switch access is enabled.
+  auto* accessibility_manager = chromeos::AccessibilityManager::Get();
+  source->AddBoolean("accessibility",
+                     accessibility_manager->IsSpokenFeedbackEnabled() ||
+                         accessibility_manager->IsSwitchAccessEnabled());
+
   source->AddString("appLocale", g_browser_process->GetApplicationLocale());
   // Add strings that can be pulled in.
   source->AddString("boardName", base::SysInfo::GetLsbReleaseBoard());