diff --git a/browser/BUILD.gn b/browser/BUILD.gn
index e650c020066c..952622485b69 100644
--- a/browser/BUILD.gn
+++ b/browser/BUILD.gn
@@ -94,6 +94,12 @@ source_set("browser_process") {
     "//third_party/widevine/cdm:buildflags",
   ]
 
+  if (!is_android) {
+    deps += [
+      "//brave/app:brave_generated_resources_grit",
+    ]
+  }
+
   if (bundle_widevine_cdm || enable_widevine_cdm_component) { deps += [ "//brave/browser/widevine" ] }
 
   if (is_win && is_official_build) {
diff --git a/browser/extensions/BUILD.gn b/browser/extensions/BUILD.gn
index 57aedb616a7a..c7beecf8ca9d 100644
--- a/browser/extensions/BUILD.gn
+++ b/browser/extensions/BUILD.gn
@@ -42,6 +42,7 @@ source_set("extensions") {
 
   deps = [
     "//base",
+    "//brave/app:brave_generated_resources_grit",
     "//brave/common:pref_names",
     "//brave/common/extensions/api",
     "//brave/components/brave_extension:static_resources",
diff --git a/browser/net/BUILD.gn b/browser/net/BUILD.gn
index d78594cbb273..94691738ed64 100644
--- a/browser/net/BUILD.gn
+++ b/browser/net/BUILD.gn
@@ -39,4 +39,10 @@ source_set("net") {
     "//extensions/common:common_constants",
     "//net",
   ]
+
+  if (!is_android) {
+    deps += [
+      "//brave/app:brave_generated_resources_grit",
+    ]
+  }
 }
diff --git a/browser/themes/BUILD.gn b/browser/themes/BUILD.gn
index c11f65b40160..aa7f5fd623b9 100644
--- a/browser/themes/BUILD.gn
+++ b/browser/themes/BUILD.gn
@@ -14,6 +14,7 @@ source_set("themes") {
 
   deps = [
     "//base",
+    "//brave/app:brave_generated_resources_grit",
     "//brave/common",
     "//chrome/common",
     "//components/prefs",
diff --git a/browser/ui/BUILD.gn b/browser/ui/BUILD.gn
index 22e5750934be..09df50a6510f 100644
--- a/browser/ui/BUILD.gn
+++ b/browser/ui/BUILD.gn
@@ -72,6 +72,8 @@ source_set("ui") {
     "webui/brave_donate_ui.h",
     "webui/brave_md_settings_ui.cc",
     "webui/brave_md_settings_ui.h",
+    "webui/navigation_bar_data_provider.cc",
+    "webui/navigation_bar_data_provider.h",
     "webui/brave_new_tab_ui.cc",
     "webui/brave_new_tab_ui.h",
     "webui/brave_web_ui_controller_factory.cc",
@@ -144,6 +146,12 @@ source_set("ui") {
     "//ui/gfx",
   ]
 
+  if (!is_android) {
+    deps += [
+      "//brave/app:brave_generated_resources_grit",
+    ]
+  }
+
   if (is_win && is_official_build) {
     sources += [
       "//chrome/browser/ui/webui/help/version_updater_win.cc",
diff --git a/browser/ui/webui/brave_md_settings_ui.cc b/browser/ui/webui/brave_md_settings_ui.cc
index b8c5d40052b1..805288005676 100644
--- a/browser/ui/webui/brave_md_settings_ui.cc
+++ b/browser/ui/webui/brave_md_settings_ui.cc
@@ -13,6 +13,7 @@
 #include "brave/browser/ui/webui/settings/brave_default_extensions_handler.h"
 #include "brave/browser/ui/webui/settings/brave_privacy_handler.h"
 #include "brave/browser/ui/webui/settings/default_brave_shields_handler.h"
+#include "brave/browser/ui/webui/navigation_bar_data_provider.h"
 #include "brave/browser/version_info.h"
 #include "brave/common/brave_switches.h"
 #include "chrome/browser/profiles/profile.h"
@@ -56,4 +57,5 @@ void BraveMdSettingsUI::AddResources(content::WebUIDataSource* html_source,
                           command_line.HasSwitch(switches::kDisableBraveSync));
   html_source->AddString("braveProductVersion",
     version_info::GetBraveVersionWithoutChromiumMajorVersion());
+  NavigationBarDataProvider::Initialize(html_source);
 }
diff --git a/browser/ui/webui/brave_webui_source.cc b/browser/ui/webui/brave_webui_source.cc
index 041ae803a175..b9c52392a4d4 100644
--- a/browser/ui/webui/brave_webui_source.cc
+++ b/browser/ui/webui/brave_webui_source.cc
@@ -12,6 +12,7 @@
 #include "content/public/browser/web_ui_data_source.h"
 
 #if !defined(OS_ANDROID)
+#include "brave/browser/ui/webui/navigation_bar_data_provider.h"
 #include "brave/components/brave_rewards/resources/grit/brave_rewards_resources.h"
 #include "components/grit/brave_components_resources.h"
 #else
@@ -45,6 +46,11 @@ void AddResourcePaths(content::WebUIDataSource* html_source,
 
 void CustomizeWebUIHTMLSource(const std::string &name,
     content::WebUIDataSource* source) {
+#if !defined(OS_ANDROID)
+  if (name == "rewards") {
+    NavigationBarDataProvider::Initialize(source);
+  }
+#endif
   static std::map<std::string, std::vector<WebUISimpleItem> > resources = {
     {
       std::string("newtab"), {
diff --git a/browser/ui/webui/navigation_bar_data_provider.cc b/browser/ui/webui/navigation_bar_data_provider.cc
new file mode 100644
index 000000000000..f08ed5563fc6
--- /dev/null
+++ b/browser/ui/webui/navigation_bar_data_provider.cc
@@ -0,0 +1,23 @@
+// Copyright (c) 2019 The Brave Authors
+// 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/.
+
+#include "brave/browser/ui/webui/navigation_bar_data_provider.h"
+
+#include "chrome/grit/generated_resources.h"
+#include "components/strings/grit/components_strings.h"
+#include "content/public/browser/web_ui_data_source.h"
+
+// static
+void NavigationBarDataProvider::Initialize(content::WebUIDataSource* source) {
+  source->AddLocalizedString(
+    "brToolbarSettingsTitle", IDS_SETTINGS_SETTINGS);
+  source->AddLocalizedString(
+    "brToolbarBookmarksTitle", IDS_BOOKMARK_MANAGER_TITLE);
+  source->AddLocalizedString(
+    "brToolbarDownloadsTitle", IDS_DOWNLOAD_TITLE);
+  source->AddLocalizedString(
+    "brToolbarHistoryTitle", IDS_HISTORY_TITLE);
+}
+
diff --git a/browser/ui/webui/navigation_bar_data_provider.h b/browser/ui/webui/navigation_bar_data_provider.h
new file mode 100644
index 000000000000..db431bbc23df
--- /dev/null
+++ b/browser/ui/webui/navigation_bar_data_provider.h
@@ -0,0 +1,20 @@
+// Copyright (c) 2019 The Brave Authors
+// 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/.
+
+#ifndef BRAVE_BROWSER_UI_WEBUI_NAVIGATION_BAR_DATA_PROVIDER_H
+#define BRAVE_BROWSER_UI_WEBUI_NAVIGATION_BAR_DATA_PROVIDER_H
+
+namespace content {
+class WebUIDataSource;
+}
+
+class NavigationBarDataProvider {
+  public:
+    // Sets load-time constants on |source|. This handles a flicker-free initial
+    // page load (i.e. loadTimeData.getString('brToolbarSettingsTitle')).
+    static void Initialize(content::WebUIDataSource* source);
+};
+
+#endif
diff --git a/browser/widevine/BUILD.gn b/browser/widevine/BUILD.gn
index 264c2719a5fb..47cc2cb3672a 100644
--- a/browser/widevine/BUILD.gn
+++ b/browser/widevine/BUILD.gn
@@ -5,6 +5,7 @@ assert(bundle_widevine_cdm || enable_widevine_cdm_component)
 source_set("widevine") {
   deps = [
     "//base",
+    "//brave/app:brave_generated_resources_grit",
     "//components/content_settings/core/common",
     "//content/public/browser",
     "//content/public/common",
diff --git a/chromium_src/chrome/browser/ui/webui/bookmarks/bookmarks_ui.cc b/chromium_src/chrome/browser/ui/webui/bookmarks/bookmarks_ui.cc
new file mode 100644
index 000000000000..ee3a704ee741
--- /dev/null
+++ b/chromium_src/chrome/browser/ui/webui/bookmarks/bookmarks_ui.cc
@@ -0,0 +1,17 @@
+// Copyright (c) 2019 The Brave Authors
+// 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/.
+
+#include "brave/browser/ui/webui/navigation_bar_data_provider.h"
+
+namespace {
+
+void BraveCustomizeBookmarksDataSource(content::WebUIDataSource* source) {
+  NavigationBarDataProvider::Initialize(source);
+}
+
+}  // namespace
+
+#include "../../../../../../chrome/browser/ui/webui/bookmarks/bookmarks_ui.cc"
+
diff --git a/chromium_src/chrome/browser/ui/webui/downloads/downloads_ui.cc b/chromium_src/chrome/browser/ui/webui/downloads/downloads_ui.cc
new file mode 100644
index 000000000000..a4f8b17d815e
--- /dev/null
+++ b/chromium_src/chrome/browser/ui/webui/downloads/downloads_ui.cc
@@ -0,0 +1,17 @@
+// Copyright (c) 2019 The Brave Authors
+// 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/.
+
+#include "brave/browser/ui/webui/navigation_bar_data_provider.h"
+
+namespace {
+
+void BraveCustomizeDownloadsDataSource(content::WebUIDataSource* source) {
+  NavigationBarDataProvider::Initialize(source);
+}
+
+}  // namespace
+
+#include "../../../../../../chrome/browser/ui/webui/downloads/downloads_ui.cc"  // NOLINT
+
diff --git a/chromium_src/chrome/browser/ui/webui/extensions/extensions_ui.cc b/chromium_src/chrome/browser/ui/webui/extensions/extensions_ui.cc
index 17bc69d02250..c2531d8a47a4 100644
--- a/chromium_src/chrome/browser/ui/webui/extensions/extensions_ui.cc
+++ b/chromium_src/chrome/browser/ui/webui/extensions/extensions_ui.cc
@@ -5,6 +5,7 @@
 
 #include "brave/browser/resources/md_extensions/grit/brave_extensions_resources.h"
 #include "brave/browser/resources/md_extensions/grit/brave_extensions_resources_map.h"
+#include "brave/browser/ui/webui/navigation_bar_data_provider.h"
 #include "brave/grit/brave_generated_resources.h"
 #include "chrome/common/buildflags.h"
 #include "chrome/grit/generated_resources.h"
@@ -23,6 +24,7 @@ void BraveAddExtensionsResources(content::WebUIDataSource* source) {
                             kBraveExtensionsResources[i].value);
   }
 #endif
+  NavigationBarDataProvider::Initialize(source);
 }
 
 }  // namespace
diff --git a/chromium_src/chrome/browser/ui/webui/history_ui.cc b/chromium_src/chrome/browser/ui/webui/history_ui.cc
new file mode 100644
index 000000000000..e24e6f19e7fa
--- /dev/null
+++ b/chromium_src/chrome/browser/ui/webui/history_ui.cc
@@ -0,0 +1,17 @@
+// Copyright (c) 2019 The Brave Authors
+// 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/.
+
+#include "brave/browser/ui/webui/navigation_bar_data_provider.h"
+
+namespace {
+
+void BraveCustomizeHistoryDataSource(content::WebUIDataSource* source) {
+  NavigationBarDataProvider::Initialize(source);
+}
+
+}  // namespace
+
+#include "../../../../../chrome/browser/ui/webui/history_ui.cc"
+
diff --git a/chromium_src/ui/base/webui/web_ui_util.cc b/chromium_src/ui/base/webui/web_ui_util.cc
index c9ddfa85009a..f6cb6cae6e6d 100644
--- a/chromium_src/ui/base/webui/web_ui_util.cc
+++ b/chromium_src/ui/base/webui/web_ui_util.cc
@@ -3,46 +3,11 @@
 #include "brave/ui/webui/resources/grit/brave_webui_resources.h"
 #include "ui/resources/grit/webui_resources.h"
 
-#define SetLoadTimeDataDefaults SetLoadTimeDataDefaults_ChromiumImpl
+// Replace text_defaults.css with brave's text_defaults.css
+// which is defined in brave_webui_resources.grd.
 #define IDR_WEBUI_CSS_TEXT_DEFAULTS_MD_PREVIOUS IDR_WEBUI_CSS_TEXT_DEFAULTS_MD
 #undef IDR_WEBUI_CSS_TEXT_DEFAULTS_MD
 #define IDR_WEBUI_CSS_TEXT_DEFAULTS_MD IDR_BRAVE_WEBUI_CSS_TEXT_DEFAULTS
 #include "../../../../../ui/base/webui/web_ui_util.cc"
-#undef SetLoadTimeDataDefaults
 #undef IDR_WEBUI_CSS_TEXT_DEFAULTS_MD
 #define IDR_WEBUI_CSS_TEXT_DEFAULTS_MD IDR_WEBUI_CSS_TEXT_DEFAULTS_MD_PREVIOUS
-
-#include "chrome/grit/generated_resources.h"
-#include "components/strings/grit/components_strings.h"
-#include "ui/base/l10n/l10n_util.h"
-
-namespace webui {
-
-void SetLoadTimeDataDefaults(const std::string& app_locale,
-                             base::DictionaryValue* localized_strings) {
-
-  SetLoadTimeDataDefaults_ChromiumImpl(app_locale, localized_strings);
-  localized_strings->SetString(
-    "brToolbarSettingsTitle",
-    l10n_util::GetStringUTF16(IDS_SETTINGS_SETTINGS)
-  );
-  localized_strings->SetString(
-    "brToolbarBookmarksTitle",
-    l10n_util::GetStringUTF16(IDS_BOOKMARK_MANAGER_TITLE)
-  );
-  localized_strings->SetString(
-    "brToolbarDownloadsTitle",
-    l10n_util::GetStringUTF16(IDS_DOWNLOAD_TITLE)
-  );
-  localized_strings->SetString(
-    "brToolbarHistoryTitle",
-    l10n_util::GetStringUTF16(IDS_HISTORY_TITLE)
-  );
-}
-
-void SetLoadTimeDataDefaults(const std::string& app_locale,
-                             ui::TemplateReplacements* replacements) {
-  SetLoadTimeDataDefaults_ChromiumImpl(app_locale, replacements);
-}
-
-}
\ No newline at end of file
diff --git a/patches/chrome-browser-ui-webui-bookmarks-bookmarks_ui.cc.patch b/patches/chrome-browser-ui-webui-bookmarks-bookmarks_ui.cc.patch
new file mode 100644
index 000000000000..e99155a43643
--- /dev/null
+++ b/patches/chrome-browser-ui-webui-bookmarks-bookmarks_ui.cc.patch
@@ -0,0 +1,12 @@
+diff --git a/chrome/browser/ui/webui/bookmarks/bookmarks_ui.cc b/chrome/browser/ui/webui/bookmarks/bookmarks_ui.cc
+index 0542e022aeaedc240cf0bc79b9acebfe121fcc4d..ac9fe90cb2d96fa9850c066ae33630a60bf4ba22 100644
+--- a/chrome/browser/ui/webui/bookmarks/bookmarks_ui.cc
++++ b/chrome/browser/ui/webui/bookmarks/bookmarks_ui.cc
+@@ -45,6 +45,7 @@ content::WebUIDataSource* CreateBookmarksUIHTMLSource(Profile* profile) {
+   content::WebUIDataSource* source =
+       content::WebUIDataSource::Create(chrome::kChromeUIBookmarksHost);
+ 
++  BraveCustomizeBookmarksDataSource(source);
+   // Build an Accelerator to describe undo shortcut
+   // NOTE: the undo shortcut is also defined in bookmarks/command_manager.js
+   // TODO(b/893033): de-duplicate shortcut by moving all shortcut definitions
diff --git a/patches/chrome-browser-ui-webui-downloads-downloads_ui.cc.patch b/patches/chrome-browser-ui-webui-downloads-downloads_ui.cc.patch
new file mode 100644
index 000000000000..de3889b873b9
--- /dev/null
+++ b/patches/chrome-browser-ui-webui-downloads-downloads_ui.cc.patch
@@ -0,0 +1,12 @@
+diff --git a/chrome/browser/ui/webui/downloads/downloads_ui.cc b/chrome/browser/ui/webui/downloads/downloads_ui.cc
+index 9f595a7bbb7adc1e42fd7eac31d0b8819deda532..41bfbeddcc010e8c76cf198c64d428d274b44137 100644
+--- a/chrome/browser/ui/webui/downloads/downloads_ui.cc
++++ b/chrome/browser/ui/webui/downloads/downloads_ui.cc
+@@ -47,6 +47,7 @@ content::WebUIDataSource* CreateDownloadsUIHTMLSource(Profile* profile) {
+   content::WebUIDataSource* source =
+       content::WebUIDataSource::Create(chrome::kChromeUIDownloadsHost);
+ 
++  BraveCustomizeDownloadsDataSource(source);
+   source->AddLocalizedString("title", IDS_DOWNLOAD_TITLE);
+   source->AddLocalizedString("searchResultsPlural", IDS_SEARCH_RESULTS_PLURAL);
+   source->AddLocalizedString("searchResultsSingular",
diff --git a/patches/chrome-browser-ui-webui-history_ui.cc.patch b/patches/chrome-browser-ui-webui-history_ui.cc.patch
new file mode 100644
index 000000000000..e7561c7bad1d
--- /dev/null
+++ b/patches/chrome-browser-ui-webui-history_ui.cc.patch
@@ -0,0 +1,12 @@
+diff --git a/chrome/browser/ui/webui/history_ui.cc b/chrome/browser/ui/webui/history_ui.cc
+index b6b6f4f7aa79a1c3a44a187c1f618e10194442bd..09a0d991a87ff90c84678ac0f6325a8e5076560a 100644
+--- a/chrome/browser/ui/webui/history_ui.cc
++++ b/chrome/browser/ui/webui/history_ui.cc
+@@ -56,6 +56,7 @@ content::WebUIDataSource* CreateHistoryUIHTMLSource(Profile* profile) {
+   content::WebUIDataSource* source =
+       content::WebUIDataSource::Create(chrome::kChromeUIHistoryHost);
+ 
++  BraveCustomizeHistoryDataSource(source);
+   // Localized strings (alphabetical order).
+   source->AddLocalizedString("actionMenuDescription",
+                              IDS_HISTORY_ACTION_MENU_DESCRIPTION);
diff --git a/ui/base/BUILD.gn b/ui/base/BUILD.gn
index b55cbb0940fb..b8502264cb17 100644
--- a/ui/base/BUILD.gn
+++ b/ui/base/BUILD.gn
@@ -1,6 +1,5 @@
 group("chromium_deps") {
   deps = [
     "//brave/ui/webui/resources",
-    "//brave/app:brave_generated_resources_grit",
   ]
 }