ui/base/resource: Roll our own version of ReadBigEndian() function.

ui/base/resource/resource_bundle_unittest.cc

Index: ui/base/resource/resource_bundle_unittest.cc
diff --git a/ui/base/resource/resource_bundle_unittest.cc b/ui/base/resource/resource_bundle_unittest.cc
index 945a596e41fff41df98a9476491a8244de47dd20..520a4240f538db385cb71942fe3c18536320edbc 100644
--- a/ui/base/resource/resource_bundle_unittest.cc
+++ b/ui/base/resource/resource_bundle_unittest.cc
@@ -12,7 +12,7 @@
 #include "base/memory/ref_counted_memory.h"
 #include "base/path_service.h"
 #include "base/strings/utf_string_conversions.h"
-#include "net/base/big_endian.h"
+#include "grit/ui_resources.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/skia/include/core/SkBitmap.h"
@@ -21,8 +21,6 @@
 #include "ui/gfx/codec/png_codec.h"
 #include "ui/gfx/image/image_skia.h"
 
-#include "grit/ui_resources.h"
-
 using ::testing::_;
 using ::testing::Between;
 using ::testing::Property;
@@ -92,6 +90,11 @@ class MockResourceBundleDelegate : public ui::ResourceBundle::Delegate {
   }
 };
 
+uint32_t ReadBigEndian32(const void* ptr) {
+  const uint8_t* data = reinterpret_cast<const uint8_t*>(ptr);
+  return (data[3] << 0) | (data[2] << 8) | (data[1] << 16) | (data[0] << 24);
+}
+
 // Returns |bitmap_data| with |custom_chunk| inserted after the IHDR chunk.
 void AddCustomChunk(const base::StringPiece& custom_chunk,
                     std::vector<unsigned char>* bitmap_data) {
@@ -105,9 +108,7 @@ void AddCustomChunk(const base::StringPiece& custom_chunk,
   char ihdr_length_data[sizeof(uint32)];
   for (size_t i = 0; i < sizeof(uint32); ++i)
     ihdr_length_data[i] = *(ihdr_start + i);
-  uint32 ihdr_chunk_length = 0;
-  net::ReadBigEndian(reinterpret_cast<char*>(ihdr_length_data),
-                     &ihdr_chunk_length);
+  uint32 ihdr_chunk_length = ReadBigEndian32(ihdr_length_data);
   EXPECT_TRUE(std::equal(
       ihdr_start + sizeof(uint32),
       ihdr_start + sizeof(uint32) + sizeof(kPngIHDRChunkType),