Reland of Deduplicate Monochrome locale .paks

ui/base/resource/resource_bundle_android.h

Index: ui/base/resource/resource_bundle_android.h
diff --git a/ui/base/resource/resource_bundle_android.h b/ui/base/resource/resource_bundle_android.h
index 2123eb053d809efe3a64757eae036dee4e484cab..57059b0ecbc9f948c325e8ac433430276166b6d9 100644
--- a/ui/base/resource/resource_bundle_android.h
+++ b/ui/base/resource/resource_bundle_android.h
@@ -31,10 +31,17 @@ UI_BASE_EXPORT int GetCommonResourcesPackFd(
 UI_BASE_EXPORT int GetLocalePackFd(
     base::MemoryMappedFile::Region* out_region);
 
+// Returns the file descriptor and region for the secondary locale .pak file.
+UI_BASE_EXPORT int GetSecondaryLocalePackFd(
+    base::MemoryMappedFile::Region* out_region);
+
 // Tell ResourceBundle to locate locale pak files via
 // GetPathForAndroidLocalePakWithinApk rather than looking for them on disk.
 UI_BASE_EXPORT void SetLocalePaksStoredInApk(bool value);
 
+// Tell ResourceBundle to load secondary locale .pak files.
+UI_BASE_EXPORT void SetLoadSecondaryLocalePaks(bool value);
+
 // Returns the path within the apk for the given locale's .pak file, or an
 // empty string if it doesn't exist.
 // Only locale paks for the active Android language can be retrieved.