ungoogled-chromium/patches/extra/ungoogled-chromium/add-flag-to-clear-data-on-exit.patch

--- a/chrome/browser/browsing_data/chrome_browsing_data_lifetime_manager.cc
+++ b/chrome/browser/browsing_data/chrome_browsing_data_lifetime_manager.cc
@@ -24,6 +24,7 @@
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/sync/sync_service_factory.h"
+#include "components/browsing_data/core/features.h"
 #include "components/browsing_data/core/pref_names.h"
 #include "components/keep_alive_registry/keep_alive_types.h"
 #include "components/keep_alive_registry/scoped_keep_alive.h"
@@ -151,6 +152,21 @@ class BrowsingDataRemoverObserver
 #endif
 };
 
+uint64_t AllOriginTypeMask() {
+  return content::BrowsingDataRemover::ORIGIN_TYPE_PROTECTED_WEB |
+         content::BrowsingDataRemover::ORIGIN_TYPE_UNPROTECTED_WEB;
+}
+
+uint64_t AllRemoveMask() {
+  return content::BrowsingDataRemover::DATA_TYPE_CACHE |
+         content::BrowsingDataRemover::DATA_TYPE_DOWNLOADS |
+         chrome_browsing_data_remover::DATA_TYPE_CONTENT_SETTINGS |
+         chrome_browsing_data_remover::DATA_TYPE_FORM_DATA |
+         chrome_browsing_data_remover::DATA_TYPE_HISTORY |
+         chrome_browsing_data_remover::DATA_TYPE_PASSWORDS |
+         chrome_browsing_data_remover::DATA_TYPE_SITE_DATA;
+}
+
 uint64_t GetOriginTypeMask(const base::Value& data_types) {
   uint64_t result = 0;
   for (const auto& data_type : data_types.GetList()) {
@@ -292,8 +308,9 @@ void ChromeBrowsingDataLifetimeManager::
     bool keep_browser_alive) {
   auto* data_types = profile_->GetPrefs()->GetList(
       browsing_data::prefs::kClearBrowsingDataOnExitList);
-  if (data_types && !data_types->GetList().empty() &&
-      !SyncServiceFactory::IsSyncAllowed(profile_)) {
+  bool cdoe = base::FeatureList::IsEnabled(browsing_data::features::kClearDataOnExit);
+  if (cdoe || (data_types && !data_types->GetList().empty() &&
+      !SyncServiceFactory::IsSyncAllowed(profile_))) {
     profile_->GetPrefs()->SetBoolean(
         browsing_data::prefs::kClearBrowsingDataOnExitDeletionPending, true);
     auto* remover = profile_->GetBrowsingDataRemover();
@@ -304,8 +321,8 @@ void ChromeBrowsingDataLifetimeManager::
       DCHECK(keep_browser_alive);
 #endif
     remover->RemoveAndReply(base::Time(), base::Time::Max(),
-                            GetRemoveMask(*data_types),
-                            GetOriginTypeMask(*data_types),
+                            cdoe ? AllRemoveMask() : GetRemoveMask(*data_types),
+                            cdoe ? AllOriginTypeMask() : GetOriginTypeMask(*data_types),
                             BrowsingDataRemoverObserver::Create(
                                 remover, /*filterable_deletion=*/true, profile_,
                                 keep_browser_alive));
--- a/chrome/browser/browsing_data/chrome_browsing_data_lifetime_manager_factory.cc
+++ b/chrome/browser/browsing_data/chrome_browsing_data_lifetime_manager_factory.cc
@@ -48,6 +48,8 @@ ChromeBrowsingDataLifetimeManagerFactory
 KeyedService* ChromeBrowsingDataLifetimeManagerFactory::BuildServiceInstanceFor(
     content::BrowserContext* context) const {
   if (!base::FeatureList::IsEnabled(
+          browsing_data::features::kClearDataOnExit) &&
+      !base::FeatureList::IsEnabled(
           browsing_data::features::kEnableBrowsingDataLifetimeManager))
     return nullptr;
   Profile* profile = Profile::FromBrowserContext(context);
--- a/chrome/browser/ungoogled_flag_entries.h
+++ b/chrome/browser/ungoogled_flag_entries.h
@@ -60,4 +60,8 @@
      "Keep old history",
      "Keep history older than 3 months.  ungoogled-chromium flag",
      kOsAll, SINGLE_VALUE_TYPE("keep-old-history")},
+    {"clear-data-on-exit",
+     "Clear data on exit",
+     "Clears all browsing data on exit.  ungoogled-chromium flag",
+     kOsDesktop, FEATURE_VALUE_TYPE(browsing_data::features::kClearDataOnExit)},
 #endif  // CHROME_BROWSER_UNGOOGLED_FLAG_ENTRIES_H_
--- a/components/browsing_data/core/features.cc
+++ b/components/browsing_data/core/features.cc
@@ -19,5 +19,7 @@ const base::Feature kEnableBrowsingDataL
 const base::Feature kEnableBrowsingDataLifetimeManager{
     "BrowsingDataLifetimeManager", base::FEATURE_ENABLED_BY_DEFAULT};
 #endif
+
+const base::Feature kClearDataOnExit{"ClearDataOnExit", base::FEATURE_DISABLED_BY_DEFAULT};
 }  // namespace features
 }  // namespace browsing_data
--- a/components/browsing_data/core/features.h
+++ b/components/browsing_data/core/features.h
@@ -17,6 +17,7 @@ extern const base::Feature kEnableRemovi
 // defined by the BrowsingDataLifetime policy.
 extern const base::Feature kEnableBrowsingDataLifetimeManager;
 
+extern const base::Feature kClearDataOnExit;
 }  // namespace features
 }  // namespace browsing_data