Fixed crash when searching from omnibox in tor window with search engine extension

browser/brave_profile_prefs.cc

@@ -126,6 +126,11 @@ void RegisterProfilePrefsForMigration(
 
   // Restore "Other Bookmarks" migration
   registry->RegisterBooleanPref(kOtherBookmarksMigrated, false);
+
+  // Added 04/2021
+  registry->RegisterIntegerPref(
+      kAlternativeSearchEngineProviderInTor,
+      TemplateURLPrepopulateData::PREPOPULATED_ENGINE_ID_INVALID);
 }
 
 void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry) {

browser/search_engines/search_engine_provider_service_factory.cc

@@ -100,7 +100,4 @@ SearchEngineProviderServiceFactory::ServiceIsCreatedWithBrowserContext() const {
 void SearchEngineProviderServiceFactory::RegisterProfilePrefs(
     user_prefs::PrefRegistrySyncable* registry) {
   registry->RegisterBooleanPref(kUseAlternativeSearchEngineProvider, false);
-  registry->RegisterIntegerPref(
-      kAlternativeSearchEngineProviderInTor,
-      TemplateURLPrepopulateData::PREPOPULATED_ENGINE_ID_INVALID);
 }

browser/search_engines/tor_window_search_engine_provider_service.cc

@@ -5,8 +5,6 @@
 
 #include "brave/browser/search_engines/tor_window_search_engine_provider_service.h"
 
-#include "brave/browser/search_engines/search_engine_provider_util.h"
-#include "brave/common/pref_names.h"
 #include "brave/components/search_engines/brave_prepopulated_engines.h"
 #include "chrome/browser/profiles/profile.h"
 #include "components/search_engines/template_url_prepopulate_data.h"
@@ -16,69 +14,39 @@ TorWindowSearchEngineProviderService::
 TorWindowSearchEngineProviderService(Profile* otr_profile)
     : SearchEngineProviderService(otr_profile) {
   DCHECK(otr_profile->IsTor());
-  DCHECK(otr_profile->IsOffTheRecord());
 
-  alternative_search_engine_provider_in_tor_.Init(
-      kAlternativeSearchEngineProviderInTor,
-      otr_profile->GetOriginalProfile()->GetPrefs());
-
-  // Configure previously used provider because effective tor profile is
-  // off the recored profile.
+  // Config default provider for tor window.
   auto provider_data = GetInitialSearchEngineProvider(otr_profile->GetPrefs());
   TemplateURL provider_url(*provider_data);
   otr_template_url_service_->SetUserSelectedDefaultSearchProvider(
       &provider_url);
-
-  // Monitor otr(off the record) profile's search engine changing to caching
-  // in original profile.
-  otr_template_url_service_->AddObserver(this);
 }
 
-TorWindowSearchEngineProviderService::
-~TorWindowSearchEngineProviderService() {
-  otr_template_url_service_->RemoveObserver(this);
-}
-
-void TorWindowSearchEngineProviderService::OnTemplateURLServiceChanged() {
-  alternative_search_engine_provider_in_tor_.SetValue(
-     otr_template_url_service_->GetDefaultSearchProvider()->
-         data().prepopulate_id);
-}
+TorWindowSearchEngineProviderService::~TorWindowSearchEngineProviderService() =
+    default;
 
 std::unique_ptr<TemplateURLData>
 TorWindowSearchEngineProviderService::GetInitialSearchEngineProvider(
     PrefService* prefs) const {
-  std::unique_ptr<TemplateURLData> provider_data = nullptr;
-  int initial_id = alternative_search_engine_provider_in_tor_.GetValue();
-  if (initial_id !=
-      TemplateURLPrepopulateData::PREPOPULATED_ENGINE_ID_INVALID) {
-    provider_data =
-        TemplateURLPrepopulateData::GetPrepopulatedEngine(prefs, initial_id);
-  }
-
-  // If this is first run, |initial_id| is invalid. Then, use qwant or ddg
-  // depends on default prepopulate data. If not, check that the initial_id
-  // returned data.
-  if (!provider_data) {
-    initial_id = TemplateURLPrepopulateData::GetPrepopulatedDefaultSearch(
-                     otr_profile_->GetPrefs())
-                     ->prepopulate_id;
-    switch (initial_id) {
-      case TemplateURLPrepopulateData::PREPOPULATED_ENGINE_ID_QWANT:
-      case TemplateURLPrepopulateData::PREPOPULATED_ENGINE_ID_DUCKDUCKGO:
-      case TemplateURLPrepopulateData::PREPOPULATED_ENGINE_ID_DUCKDUCKGO_DE:
-      case TemplateURLPrepopulateData::
-          PREPOPULATED_ENGINE_ID_DUCKDUCKGO_AU_NZ_IE:
-        break;
-
-      default:
-        initial_id =
-            TemplateURLPrepopulateData::PREPOPULATED_ENGINE_ID_DUCKDUCKGO;
-        break;
-    }
-    provider_data =
-        TemplateURLPrepopulateData::GetPrepopulatedEngine(prefs, initial_id);
+  std::unique_ptr<TemplateURLData> provider_data;
+
+  int initial_id = TemplateURLPrepopulateData::GetPrepopulatedDefaultSearch(
+                       otr_profile_->GetPrefs())
+                       ->prepopulate_id;
+  switch (initial_id) {
+    case TemplateURLPrepopulateData::PREPOPULATED_ENGINE_ID_QWANT:
+    case TemplateURLPrepopulateData::PREPOPULATED_ENGINE_ID_DUCKDUCKGO:
+    case TemplateURLPrepopulateData::PREPOPULATED_ENGINE_ID_DUCKDUCKGO_DE:
+    case TemplateURLPrepopulateData::PREPOPULATED_ENGINE_ID_DUCKDUCKGO_AU_NZ_IE:
+      break;
+
+    default:
+      initial_id =
+          TemplateURLPrepopulateData::PREPOPULATED_ENGINE_ID_DUCKDUCKGO;
+      break;
   }
+  provider_data =
+      TemplateURLPrepopulateData::GetPrepopulatedEngine(prefs, initial_id);
 
   DCHECK(provider_data);
   return provider_data;

browser/search_engines/tor_window_search_engine_provider_service.h

@@ -7,9 +7,8 @@
 #define BRAVE_BROWSER_SEARCH_ENGINES_TOR_WINDOW_SEARCH_ENGINE_PROVIDER_SERVICE_H_
 
 #include <memory>
+
 #include "brave/browser/search_engines/search_engine_provider_service.h"
-#include "components/prefs/pref_member.h"
-#include "components/search_engines/template_url_service_observer.h"
 
 class PrefService;
 struct TemplateURLData;
@@ -18,21 +17,15 @@ struct TemplateURLData;
 // provider persist across the sessions.
 // Also, BraveProfileManager::SetNonPersonalProfilePrefs() overrides for it.
 class TorWindowSearchEngineProviderService
-    : public SearchEngineProviderService,
-      public TemplateURLServiceObserver {
+    : public SearchEngineProviderService {
  public:
   explicit TorWindowSearchEngineProviderService(Profile* otr_profile);
   ~TorWindowSearchEngineProviderService() override;
 
  private:
-  // TemplateURLServiceObserver overrides:
-  void OnTemplateURLServiceChanged() override;
-
   std::unique_ptr<TemplateURLData> GetInitialSearchEngineProvider(
       PrefService* prefs) const;
 
-  IntegerPrefMember alternative_search_engine_provider_in_tor_;
-
   DISALLOW_COPY_AND_ASSIGN(TorWindowSearchEngineProviderService);
 };
 

browser/sources.gni

@@ -10,6 +10,7 @@ import("//brave/browser/new_tab/sources.gni")
 import("//brave/browser/permissions/sources.gni")
 import("//brave/browser/signin/sources.gni")
 import("//brave/browser/themes/sources.gni")
+import("//brave/chromium_src/chrome/browser/prefs/sources.gni")
 
 brave_chrome_browser_sources = []
 brave_chrome_browser_sources += brave_browser_themes_sources
@@ -27,6 +28,7 @@ brave_chrome_browser_deps += brave_browser_new_tab_deps
 brave_chrome_browser_deps += brave_browser_permissions_deps
 brave_chrome_browser_deps += brave_browser_signin_deps
 brave_chrome_browser_deps += brave_browser_brave_rewards_deps
+brave_chrome_browser_deps += brave_chromium_src_chrome_browser_prefs_deps
 
 brave_chrome_browser_public_deps = [
   "//brave/components/brave_sync:constants",

build/config/brave_build.gni

@@ -5,7 +5,6 @@ import("//brave/brave_repack_locales.gni")
 import("//brave/browser/extensions/resources.gni")
 import("//brave/browser/resources/extensions/sources.gni")
 import("//brave/browser/resources/settings/sources.gni")
-import("//brave/browser/sources.gni")
 import("//brave/build/config/compiler.gni")
 import("//brave/build/features.gni")
 import("//brave/build/mac/config.gni")

chromium_src/chrome/browser/prefs/browser_prefs.cc

@@ -7,6 +7,7 @@
 #include "brave/browser/brave_profile_prefs.h"
 #include "brave/browser/search/ntp_utils.h"
 #include "brave/browser/themes/brave_dark_mode_utils.h"
+#include "brave/common/pref_names.h"
 #include "brave/components/brave_sync/brave_sync_prefs.h"
 #include "chrome/browser/profiles/profile.h"
 #include "components/gcm_driver/gcm_buildflags.h"
@@ -51,6 +52,9 @@ void MigrateObsoleteProfilePrefs(Profile* profile) {
 #if !defined(OS_ANDROID)
   new_tab_page::MigrateNewTabPagePrefs(profile);
 #endif
+
+  // Added 04/2021
+  profile->GetPrefs()->ClearPref(kAlternativeSearchEngineProviderInTor);
 }
 
 // This method should be periodically pruned of year+ old migrations.

chromium_src/chrome/browser/prefs/sources.gni

@@ -0,0 +1,24 @@
+# Copyright (c) 2021 The Brave Authors. All rights reserved.
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this file,
+# You can obtain one at http://mozilla.org/MPL/2.0/.
+
+import("//components/gcm_driver/config.gni")
+import("//third_party/widevine/cdm/widevine.gni")
+
+brave_chromium_src_chrome_browser_prefs_deps = [
+  "//brave/common:pref_names",
+  "//brave/components/brave_sync",
+  "//chrome/browser/profiles:profile",
+  "//components/gcm_driver:gcm_buildflags",
+  "//third_party/widevine/cdm:buildflags",
+]
+
+if (enable_widevine) {
+  brave_chromium_src_chrome_browser_prefs_deps += [ "//brave/browser/widevine" ]
+}
+
+if (!use_gcm_from_platform) {
+  brave_chromium_src_chrome_browser_prefs_deps +=
+      [ "//brave/browser/gcm_driver" ]
+}

patches/chrome-browser-BUILD.gn.patch

@@ -1,12 +1,12 @@
 diff --git a/chrome/browser/BUILD.gn b/chrome/browser/BUILD.gn
-index 60acfefd43e4a8a74ae45f86fcef13b56b286e8e..d825fd35ddb17aca21740066a87907c2673dfa99 100644
+index b20b829650c3bc744ac0494fd98585ecc03c2cbf..28b0535c4e06bede065af1480c336088157967e5 100644
 --- a/chrome/browser/BUILD.gn
 +++ b/chrome/browser/BUILD.gn
 @@ -2501,6 +2501,7 @@ static_library("browser") {
        "performance_monitor/metric_evaluator_helper_posix.h",
      ]
    }
-+  sources += brave_chrome_browser_sources deps += brave_chrome_browser_deps public_deps += brave_chrome_browser_public_deps
++  import("//brave/browser/sources.gni") sources += brave_chrome_browser_sources deps += brave_chrome_browser_deps public_deps += brave_chrome_browser_public_deps
 
    if (is_android) {
      sources += [