[headless] Embed pak file into binary.

ui/base/resource/resource_bundle.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 <stdint.h>
 
 #include <limits>
 #include <utility>
@@ skipping 251 matching lines @@
   AddDataPackFromPathInternal(path, scale_factor, true);
 }
 
 void ResourceBundle::AddDataPackFromFile(base::File file,
                                          ScaleFactor scale_factor) {
   AddDataPackFromFileRegion(std::move(file),
                             base::MemoryMappedFile::Region::kWholeFile,
                             scale_factor);
 }
 
+void ResourceBundle::AddDataPackFromBuffer(base::StringPiece buffer,
+                                           ScaleFactor scale_factor) {
+  std::unique_ptr<DataPack> data_pack(new DataPack(scale_factor));
+  if (data_pack->LoadFromBuffer(buffer)) {
+    AddDataPack(data_pack.release());
+  } else {
+    LOG(ERROR) << "Failed to load data pack from buffer";
+  }
+}
+
 void ResourceBundle::AddDataPackFromFileRegion(
     base::File file,
     const base::MemoryMappedFile::Region& region,
     ScaleFactor scale_factor) {
   std::unique_ptr<DataPack> data_pack(new DataPack(scale_factor));
   if (data_pack->LoadFromFileRegion(std::move(file), region)) {
     AddDataPack(data_pack.release());
   } else {
     LOG(ERROR) << "Failed to load data pack from file."
                << "\nSome features may not be available.";
@@ skipping 616 matching lines @@
 // static
 bool ResourceBundle::DecodePNG(const unsigned char* buf,
                                size_t size,
                                SkBitmap* bitmap,
                                bool* fell_back_to_1x) {
   *fell_back_to_1x = PNGContainsFallbackMarker(buf, size);
   return gfx::PNGCodec::Decode(buf, size, bitmap);
 }
 
 }  // namespace ui