This broke lots of layout tests on OSX.

ui/base/resource/resource_bundle.cc

 // Copyright (c) 2011 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 "base/command_line.h"
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/path_service.h"
 #include "base/stl_util.h"
 #include "base/string_piece.h"
 #include "base/synchronization/lock.h"
-#include "base/utf_string_conversions.h"
 #include "build/build_config.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/data_pack.h"
 #include "ui/base/ui_base_paths.h"
 #include "ui/base/ui_base_switches.h"
 #include "ui/gfx/codec/png_codec.h"
 #include "ui/gfx/font.h"
 #include "ui/gfx/image/image.h"
 
@@ skipping 156 matching lines @@
   if (!locale_resources_data_->GetStringPiece(message_id, &data)) {
     // Fall back on the main data pack (shouldn't be any strings here except in
     // unittests).
     data = GetRawDataResource(message_id);
     if (data.empty()) {
       NOTREACHED() << "unable to find resource: " << message_id;
       return string16();
     }
   }
 
-  // Strings should not be loaded from a data pack that contains binary data.
-  DCHECK(locale_resources_data_->GetTextEncodingType() == DataPack::UTF16 ||
-         locale_resources_data_->GetTextEncodingType() == DataPack::UTF8)
-      << "requested localized string from binary pack file";
-
-  // Data pack encodes strings as either UTF8 or UTF16.
-  string16 msg;
-  if (locale_resources_data_->GetTextEncodingType() == DataPack::UTF16) {
-    msg = string16(reinterpret_cast<const char16*>(data.data()),
-                   data.length() / 2);
-  } else if (locale_resources_data_->GetTextEncodingType() == DataPack::UTF8) {
-    msg = UTF8ToUTF16(data);
-  }
+  // Data pack encodes strings as UTF16.
+  DCHECK_EQ(data.length() % 2, 0U);
+  string16 msg(reinterpret_cast<const char16*>(data.data()),
+               data.length() / 2);
   return msg;
 }
 
 void ResourceBundle::OverrideLocalePakForTest(const FilePath& pak_path) {
   overridden_pak_path_ = pak_path;
 }
 
 const FilePath& ResourceBundle::GetOverriddenPakPath() {
   return overridden_pak_path_;
 }
@@ skipping 190 matching lines @@
 }
 
 RefCountedStaticMemory* ResourceBundle::LoadedDataPack::GetStaticMemory(
     int resource_id) const {
   if (!data_pack_.get())
     return NULL;
   return data_pack_->GetStaticMemory(resource_id);
 }
 
 }  // namespace ui