Add new ResourceBundle::Delegate interface.

ui/base/resource/resource_bundle_android.cc

 // Copyright (c) 2012 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.
 
 #include "ui/base/resource/resource_bundle.h"
 
 #include <string>
 
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/path_service.h"
 #include "base/stringprintf.h"
 #include "ui/base/resource/resource_handle.h"
 
 namespace {
 
 FilePath GetResourcesPakFilePath(const std::string& pak_name) {
   FilePath path;
-  PathService::Get(base::DIR_ANDROID_APP_DATA, &path);
-  DCHECK(!path.empty());
-  return path.AppendASCII("paks").AppendASCII(pak_name.c_str());
+  if (PathService::Get(base::DIR_ANDROID_APP_DATA, &path))
+    return path.AppendASCII("paks").AppendASCII(pak_name.c_str());
+
+  // Return just the name of the pack file.
+  return FilePath(pak_name.c_str());
 }
 
 }  // namespace
 
 namespace ui {
 
 void ResourceBundle::LoadCommonResources() {
   AddDataPack(GetResourcesPakFilePath("chrome.pak"),
               ResourceHandle::kScaleFactor100x);
   AddDataPack(GetResourcesPakFilePath("theme_resources_standard.pak"),
               ResourceHandle::kScaleFactor100x);
   AddDataPack(GetResourcesPakFilePath("ui_resources_standard.pak"),
               ResourceHandle::kScaleFactor100x);
 }
 
 gfx::Image& ResourceBundle::GetNativeImageNamed(int resource_id, ImageRTL rtl) {
   // Flipped image is not used on Android.
   DCHECK_EQ(rtl, RTL_DISABLED);
   return GetImageNamed(resource_id);
 }
 
 }