diff --git a/src/3rdparty b/src/3rdparty
index 2c3ccc7994980d954ec0188ea3fa3d27424ef32e..1c64c9878f36c83b18c2e81aafe6eedc2a67488b 160000
--- a/src/3rdparty
+++ b/src/3rdparty
@@ -1 +1 @@
-Subproject commit 2c3ccc7994980d954ec0188ea3fa3d27424ef32e
+Subproject commit 1c64c9878f36c83b18c2e81aafe6eedc2a67488b
diff --git a/src/core/resource_bundle_qt.cpp b/src/core/resource_bundle_qt.cpp
index 2487cdbd19aa841bbfc3e71d1e4e3b36542f3678..d69ae05e13837c5995ab332d7d01c205992c0a22 100644
--- a/src/core/resource_bundle_qt.cpp
+++ b/src/core/resource_bundle_qt.cpp
@@ -47,15 +47,6 @@ void ResourceBundle::LoadCommonResources()
     AddDataPackFromPath(WebEngineLibraryInfo::getPath(QT_RESOURCES_PAK), SCALE_FACTOR_100P);
 }
 
-// As GetLocaleFilePath is excluded for Mac in resource_bundle.cc,
-// we have to add a replacement for it using the inverted logic.
-#if defined(OS_MACOSX)
-base::FilePath ResourceBundle::GetLocaleFilePath(const std::string& /*app_locale*/, bool /*test_file_exists*/)
-{
-    return base::FilePath();
-}
-#endif
-
 gfx::Image& ResourceBundle::GetNativeImageNamed(int resource_id, ImageRTL rtl)
 {
     LOG(WARNING) << "Unable to load image with id " << resource_id;
diff --git a/tools/buildscripts/repack_locales.py b/tools/buildscripts/repack_locales.py
index 05e2895edf1735fbdff89bb4c3c0495a5634f6d5..389e9b1fdef38c5eba5df601353b46d13b28aad1 100755
--- a/tools/buildscripts/repack_locales.py
+++ b/tools/buildscripts/repack_locales.py
@@ -77,15 +77,7 @@ class Usage(Exception):
 def calc_output(locale):
   """Determine the file that will be generated for the given locale."""
   #e.g. '<(INTERMEDIATE_DIR)/repack/qtwebengine_locales/da.pak',
-  if OS == 'mac' or OS == 'ios':
-    # For Cocoa to find the locale at runtime, it needs to use '_' instead
-    # of '-' (http://crbug.com/20441).  Also, 'en-US' should be represented
-    # simply as 'en' (http://crbug.com/19165, http://crbug.com/25578).
-    if locale == 'en-US':
-      locale = 'en'
-    return '%s/repack/qtwebengine_locales/%s.lproj/locale.pak' % (INT_DIR, locale.replace('-', '_'))
-  else:
-    return os.path.join(INT_DIR, 'repack/qtwebengine_locales', locale + '.pak')
+  return os.path.join(INT_DIR, 'repack/qtwebengine_locales', locale + '.pak')
 
 
 def calc_inputs(locale):