Add deduplication logic to .pak files

ui/base/resource/resource_bundle_unittest.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 <stddef.h>
 #include <stdint.h>
 #include <string.h>
 
 #include "base/base_paths.h"
 #include "base/big_endian.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted_memory.h"
 #include "base/strings/utf_string_conversions.h"
 #include "build/build_config.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/base/layout.h"
 #include "ui/base/resource/data_pack.h"
+#include "ui/base/resource/data_pack_literal.h"
 #include "ui/gfx/codec/png_codec.h"
 #include "ui/gfx/font_list.h"
 #include "ui/gfx/image/image_skia.h"
 
 #if defined(OS_WIN)
 #include "ui/display/win/dpi.h"
 #endif
 
 using ::testing::_;
 using ::testing::Between;
 using ::testing::Property;
 using ::testing::Return;
 using ::testing::ReturnArg;
 
 namespace ui {
-
-extern const char kSamplePakContents[];
-extern const size_t kSamplePakSize;
-extern const char kSamplePakContents2x[];
-extern const size_t kSamplePakSize2x;
-extern const char kEmptyPakContents[];
-extern const size_t kEmptyPakSize;
-
 namespace {
 
 const unsigned char kPngMagic[8] = { 0x89, 'P', 'N', 'G', 13, 10, 26, 10 };
 const size_t kPngChunkMetadataSize = 12;
 const unsigned char kPngIHDRChunkType[4] = { 'I', 'H', 'D', 'R' };
 
 // Custom chunk that GRIT adds to PNG to indicate that it could not find a
 // bitmap at the requested scale factor and fell back to 1x.
 const unsigned char kPngScaleChunk[12] = { 0x00, 0x00, 0x00, 0x00,
                                            'c', 's', 'C', 'l',
@@ skipping 350 matching lines @@
   EXPECT_EQ(NULL, resource_bundle->LoadDataResourceBytes(
       kUnfoundResourceId));
 }
 
 TEST_F(ResourceBundleImageTest, GetRawDataResource) {
   base::FilePath data_path = dir_path().Append(FILE_PATH_LITERAL("sample.pak"));
   base::FilePath data_2x_path =
       dir_path().Append(FILE_PATH_LITERAL("sample_2x.pak"));
 
   // Dump contents into the pak files.
-  ASSERT_EQ(base::WriteFile(data_path, kSamplePakContents,
-      kSamplePakSize), static_cast<int>(kSamplePakSize));
+  ASSERT_EQ(base::WriteFile(data_path, kSamplePakContentsV4, kSamplePakSizeV4),
+            static_cast<int>(kSamplePakSizeV4));
   ASSERT_EQ(base::WriteFile(data_2x_path, kSamplePakContents2x,
       kSamplePakSize2x), static_cast<int>(kSamplePakSize2x));
 
   // Load the regular and 2x pak files.
   ResourceBundle* resource_bundle = CreateResourceBundleWithEmptyLocalePak();
   resource_bundle->AddDataPackFromPath(data_path, SCALE_FACTOR_100P);
   resource_bundle->AddDataPackFromPath(data_2x_path, SCALE_FACTOR_200P);
 
   // Resource ID 4 exists in both 1x and 2x paks, so we expect a different
   // result when requesting the 2x scale.
@@ skipping 162 matching lines @@
   resource_bundle->AddDataPackFromPath(data_default_path, SCALE_FACTOR_NONE);
 
   gfx::ImageSkia* image_skia = resource_bundle->GetImageSkiaNamed(3);
   EXPECT_EQ(1u, image_skia->image_reps().size());
   EXPECT_TRUE(image_skia->image_reps()[0].unscaled());
   EXPECT_EQ(ui::SCALE_FACTOR_100P,
             GetSupportedScaleFactor(image_skia->image_reps()[0].scale()));
 }
 
 }  // namespace ui