From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Shelley Vohr <shelley.vohr@gmail.com>
Date: Mon, 6 Jul 2020 13:46:06 -0700
Subject: Adjust accessibility_ui for Electron

This tweaks Chrome's Accessibility support at chrome://accessibility
to make it usable from Electron by replacing use of the Profile PrefService
with Electron's own PrefService in ElectronBrowserContext. It also removes
usage of BrowserList and Browser as we subclass related methods and use our
WindowList.

diff --git a/chrome/browser/ui/webui/accessibility/accessibility_ui.cc b/chrome/browser/ui/webui/accessibility/accessibility_ui.cc
index 20ba6b8fa6a7d5edf8ebab80ec15ece93d750000..6c42d825e520982c7fcac52cf3aa8aabbba621cb 100644
--- a/chrome/browser/ui/webui/accessibility/accessibility_ui.cc
+++ b/chrome/browser/ui/webui/accessibility/accessibility_ui.cc
@@ -48,6 +48,7 @@
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/browser/web_contents_user_data.h"
 #include "content/public/browser/web_ui_data_source.h"
+#include "electron/shell/browser/electron_browser_context.h"
 #include "ui/accessibility/accessibility_features.h"
 #include "ui/accessibility/ax_updates_and_events.h"
 #include "ui/accessibility/platform/ax_platform.h"
@@ -173,7 +174,7 @@ base::Value::Dict BuildTargetDescriptor(content::RenderViewHost* rvh) {
                                rvh->GetRoutingID(), accessibility_mode);
 }
 
-#if !BUILDFLAG(IS_ANDROID)
+#if 0
 base::Value::Dict BuildTargetDescriptor(Browser* browser) {
   base::Value::Dict target_data;
   target_data.Set(kSessionIdField, browser->session_id().id());
@@ -197,7 +198,7 @@ void HandleAccessibilityRequestCallback(
   auto& browser_accessibility_state =
       *content::BrowserAccessibilityState::GetInstance();
   base::Value::Dict data;
-  PrefService* pref = Profile::FromBrowserContext(current_context)->GetPrefs();
+  PrefService* pref = static_cast<electron::ElectronBrowserContext*>(current_context)->prefs();
   ui::AXMode mode = browser_accessibility_state.GetAccessibilityMode();
   bool native = mode.has_mode(ui::AXMode::kNativeAPIs);
   bool web = mode.has_mode(ui::AXMode::kWebContents);
@@ -258,7 +259,7 @@ void HandleAccessibilityRequestCallback(
   data.Set(kIsScreenReaderActive, is_screen_reader_active);
 
   std::string pref_api_type =
-      pref->GetString(prefs::kShownAccessibilityApiType);
+      std::string(pref->GetString(prefs::kShownAccessibilityApiType));
   bool pref_api_type_supported = false;
 
   std::vector<ui::AXApiType::Type> supported_api_types =
@@ -326,11 +327,11 @@ void HandleAccessibilityRequestCallback(
   data.Set(kPagesField, std::move(page_list));
 
   base::Value::List browser_list;
-#if !BUILDFLAG(IS_ANDROID)
+#if 0
   for (Browser* browser : *BrowserList::GetInstance()) {
     browser_list.Append(BuildTargetDescriptor(browser));
   }
-#endif  // !BUILDFLAG(IS_ANDROID)
+#endif
   data.Set(kBrowsersField, std::move(browser_list));
 
   std::string json_string;
@@ -804,7 +805,8 @@ void AccessibilityUIMessageHandler::SetGlobalString(
   const std::string value = CheckJSValue(data.FindString(kValueField));
 
   if (string_name == kApiTypeField) {
-    PrefService* pref = Profile::FromWebUI(web_ui())->GetPrefs();
+    PrefService* pref = static_cast<electron::ElectronBrowserContext*>(
+            web_ui()->GetWebContents()->GetBrowserContext())->prefs();
     pref->SetString(prefs::kShownAccessibilityApiType, value);
   }
 }
@@ -858,7 +860,8 @@ void AccessibilityUIMessageHandler::RequestWebContentsTree(
                      AXPropertyFilter::ALLOW_EMPTY);
   AddPropertyFilters(property_filters, deny, AXPropertyFilter::DENY);
 
-  PrefService* pref = Profile::FromWebUI(web_ui())->GetPrefs();
+  PrefService* pref = static_cast<electron::ElectronBrowserContext*>(
+              web_contents->GetBrowserContext())->prefs();
   ui::AXApiType::Type api_type =
       ui::AXApiType::From(pref->GetString(prefs::kShownAccessibilityApiType));
   std::string accessibility_contents =
@@ -885,6 +888,7 @@ void AccessibilityUIMessageHandler::RequestNativeUITree(
                      AXPropertyFilter::ALLOW_EMPTY);
   AddPropertyFilters(property_filters, deny, AXPropertyFilter::DENY);
 
+#if 0
   for (Browser* browser : *BrowserList::GetInstance()) {
     if (browser->session_id().id() == session_id) {
       base::Value::Dict result = BuildTargetDescriptor(browser);
@@ -897,6 +901,7 @@ void AccessibilityUIMessageHandler::RequestNativeUITree(
       return;
     }
   }
+#endif
 #endif  // !BUILDFLAG(IS_ANDROID)
   // No browser with the specified |session_id| was found.
   base::Value::Dict result;
@@ -940,11 +945,13 @@ void AccessibilityUIMessageHandler::StopRecording(
 }
 
 ui::AXApiType::Type AccessibilityUIMessageHandler::GetRecordingApiType() {
-  PrefService* pref = Profile::FromWebUI(web_ui())->GetPrefs();
-  const std::vector<ui::AXApiType::Type> supported_types =
-      content::AXInspectFactory::SupportedApis();
+  PrefService* pref = static_cast<electron::ElectronBrowserContext*>(
+            web_ui()->GetWebContents()->GetBrowserContext())->prefs();
   ui::AXApiType::Type api_type =
       ui::AXApiType::From(pref->GetString(prefs::kShownAccessibilityApiType));
+
+  const std::vector<ui::AXApiType::Type> supported_types =
+      content::AXInspectFactory::SupportedApis();
   // Check to see if it is in the supported types list.
   if (std::find(supported_types.begin(), supported_types.end(), api_type) ==
       supported_types.end()) {
@@ -1014,8 +1021,11 @@ void AccessibilityUIMessageHandler::RequestAccessibilityEvents(
 // static
 void AccessibilityUIMessageHandler::RegisterProfilePrefs(
     user_prefs::PrefRegistrySyncable* registry) {
+#if 0
   const std::string_view default_api_type =
       std::string_view(ui::AXApiType::Type(ui::AXApiType::kBlink));
   registry->RegisterStringPref(prefs::kShownAccessibilityApiType,
                                std::string(default_api_type));
+  registry->RegisterBooleanPref(prefs::kShowInternalAccessibilityTree, false);
+#endif
 }
diff --git a/chrome/browser/ui/webui/accessibility/accessibility_ui.h b/chrome/browser/ui/webui/accessibility/accessibility_ui.h
index b171afc941b2b3ef4aeba04a2b1c6eef2774d442..8f431aae69365bc8756e515c603332a7f1648148 100644
--- a/chrome/browser/ui/webui/accessibility/accessibility_ui.h
+++ b/chrome/browser/ui/webui/accessibility/accessibility_ui.h
@@ -27,6 +27,8 @@ namespace content {
 class WebContents;
 }  // namespace content
 
+class ElectronAccessibilityUIMessageHandler;
+
 namespace user_prefs {
 class PrefRegistrySyncable;
 }  // namespace user_prefs
@@ -77,6 +79,8 @@ class AccessibilityUIMessageHandler : public content::WebUIMessageHandler {
   static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
 
  private:
+  friend class ElectronAccessibilityUIMessageHandler;
+
   void ToggleAccessibilityForWebContents(const base::Value::List& args);
   void SetGlobalFlag(const base::Value::List& args);
   void SetGlobalString(const base::Value::List& args);
