Move ReadFileToString to the base namespace.

content/common/gpu/media/video_decode_accelerator_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.
 //
 // The bulk of this file is support code; sorry about that.  Here's an overview
 // to hopefully help readers of this code:
 // - RenderingHelper is charged with interacting with X11/{EGL/GLES2,GLX/GL} or
 //   Win/EGL.
 // - ClientState is an enum for the state of the decode client used by the test.
 // - ClientStateNotification is a barrier abstraction that allows the test code
@@ skipping 173 matching lines @@
     }
     if (!fields[6].empty()) {
       CHECK(base::StringToInt(fields[6], &video_file->min_fps_no_render));
       video_file->min_fps_no_render /= num_concurrent_decoders;
     }
     if (!fields[7].empty())
       CHECK(base::StringToInt(fields[7], &video_file->profile));
 
     // Read in the video data.
     base::FilePath filepath(video_file->file_name);
-    CHECK(file_util::ReadFileToString(filepath, &video_file->data_str))
+    CHECK(base::ReadFileToString(filepath, &video_file->data_str))
         << "test_video_file: " << filepath.MaybeAsASCII();
 
     test_video_files->push_back(video_file);
   }
 }
 
 // Read in golden MD5s for the thumbnailed rendering of this video
 void ReadGoldenThumbnailMD5s(const TestVideoFile* video_file,
                              std::vector<std::string>* md5_strings) {
   base::FilePath filepath(video_file->file_name);
   filepath = filepath.AddExtension(FILE_PATH_LITERAL(".md5"));
   std::string all_md5s;
-  file_util::ReadFileToString(filepath, &all_md5s);
+  base::ReadFileToString(filepath, &all_md5s);
   base::SplitString(all_md5s, '\n', md5_strings);
   // Check these are legitimate MD5s.
   for (std::vector<std::string>::iterator md5_string = md5_strings->begin();
       md5_string != md5_strings->end(); ++md5_string) {
       // Ignore the empty string added by SplitString
       if (!md5_string->length())
         continue;
 
       CHECK_EQ(static_cast<int>(md5_string->length()),
                kMD5StringLength) << *md5_string;
@@ skipping 1176 matching lines @@
 #elif defined(OS_CHROMEOS)
 #if defined(ARCH_CPU_ARMEL)
   content::ExynosVideoDecodeAccelerator::PreSandboxInitialization();
 #elif defined(ARCH_CPU_X86_FAMILY)
   content::VaapiWrapper::PreSandboxInitialization();
 #endif  // ARCH_CPU_ARMEL
 #endif  // OS_CHROMEOS
 
   return RUN_ALL_TESTS();
 }