Fix chromium-style warning for auto in jpeg_decode_accelerator_unittest

media/gpu/jpeg_decode_accelerator_unittest.cc

 // Copyright 2015 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.
 
 // This has to be included first.
 // See http://code.google.com/p/googletest/issues/detail?id=371
 #include "testing/gtest/include/gtest/gtest.h"
 
 #include <stddef.h>
 #include <stdint.h>
@@ skipping 457 matching lines @@
 
   for (size_t i = 0; i < num_concurrent_decoders; i++) {
     decoder_thread.task_runner()->PostTask(
         FROM_HERE, base::Bind(&JpegClient::DestroyJpegDecoder,
                               base::Unretained(clients[i])));
   }
   decoder_thread.Stop();
 }
 
 TEST_F(JpegDecodeAcceleratorTest, SimpleDecode) {
-  for (const auto& image : g_env->image_data_user_) {
+  for (auto* image : g_env->image_data_user_) {
     test_image_files_.push_back(image);
     expected_status_.push_back(CS_DECODE_PASS);
   }
   TestDecode(1);
 }
 
 TEST_F(JpegDecodeAcceleratorTest, MultipleDecoders) {
-  for (const auto& image : g_env->image_data_user_) {
+  for (auto* image : g_env->image_data_user_) {
     test_image_files_.push_back(image);
     expected_status_.push_back(CS_DECODE_PASS);
   }
   TestDecode(3);
 }
 
 TEST_F(JpegDecodeAcceleratorTest, InputSizeChange) {
   // The size of |image_data_1280x720_black_| is smaller than
   // |image_data_1280x720_default_|.
   test_image_files_.push_back(g_env->image_data_1280x720_black_.get());
@@ skipping 72 matching lines @@
 #if defined(OS_CHROMEOS) && defined(ARCH_CPU_X86_FAMILY)
   media::VaapiWrapper::PreSandboxInitialization();
 #endif
 
   media::g_env = reinterpret_cast<media::JpegDecodeAcceleratorTestEnvironment*>(
       testing::AddGlobalTestEnvironment(
           new media::JpegDecodeAcceleratorTestEnvironment(jpeg_filenames)));
 
   return RUN_ALL_TESTS();
 }