Load language .pak files directly from the apk when using splits

ui/base/resource/resource_bundle_android.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_BASE_RESOURCE_RESOURCE_BUNDLE_ANDROID_H_
 #define UI_BASE_RESOURCE_RESOURCE_BUNDLE_ANDROID_H_
 
 #include <jni.h>
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/files/memory_mapped_file.h"
 #include "ui/base/ui_base_export.h"
 
 namespace ui {
 
 // Loads "resources.apk" from the .apk. Falls back to loading from disk, which
 // is necessary for tests.
 UI_BASE_EXPORT void LoadMainAndroidPackFile(
     const char* path_within_apk,
     const base::FilePath& disk_file_path);
 
 // Returns the file descriptor and region for resources.pak.
 UI_BASE_EXPORT int GetMainAndroidPackFd(
     base::MemoryMappedFile::Region* out_region);
 
-// Returns the file descriptor and region for chrome_100_percent.pak
+// Returns the file descriptor and region for chrome_100_percent.pak.
 UI_BASE_EXPORT int GetCommonResourcesPackFd(
     base::MemoryMappedFile::Region* out_region);
 
+// Returns the file descriptor and region for the locale .pak file.
+UI_BASE_EXPORT int GetLocalePackFd(
+    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);
 
 // 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.
 UI_BASE_EXPORT std::string GetPathForAndroidLocalePakWithinApk(
     const std::string& locale);
 
 bool RegisterResourceBundleAndroid(JNIEnv* env);
 
 }  // namespace ui
 
 #endif  // UI_BASE_RESOURCE_RESOURCE_BUNDLE_ANDROID_H_