Move PathExists to base namespace.

base/process/memory_linux.cc

 // Copyright (c) 2013 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 "base/process/memory.h"
 
 #include <new>
 
 #include "base/file_util.h"
 #include "base/files/file_path.h"
@@ skipping 132 matching lines @@
 // the setuid sandbox (in process_util_linux.c, in the sandbox source)
 // also has its own C version.
 bool AdjustOOMScore(ProcessId process, int score) {
   if (score < 0 || score > kMaxOomScore)
     return false;
 
   FilePath oom_path(internal::GetProcPidDir(process));
 
   // Attempt to write the newer oom_score_adj file first.
   FilePath oom_file = oom_path.AppendASCII("oom_score_adj");
-  if (file_util::PathExists(oom_file)) {
+  if (PathExists(oom_file)) {
     std::string score_str = IntToString(score);
     DVLOG(1) << "Adjusting oom_score_adj of " << process << " to "
              << score_str;
     int score_len = static_cast<int>(score_str.length());
     return (score_len == file_util::WriteFile(oom_file,
                                               score_str.c_str(),
                                               score_len));
   }
 
   // If the oom_score_adj file doesn't exist, then we write the old
   // style file and translate the oom_adj score to the range 0-15.
   oom_file = oom_path.AppendASCII("oom_adj");
-  if (file_util::PathExists(oom_file)) {
+  if (PathExists(oom_file)) {
     // Max score for the old oom_adj range.  Used for conversion of new
     // values to old values.
     const int kMaxOldOomScore = 15;
 
     int converted_score = score * kMaxOldOomScore / kMaxOomScore;
     std::string score_str = IntToString(converted_score);
     DVLOG(1) << "Adjusting oom_adj of " << process << " to " << score_str;
     int score_len = static_cast<int>(score_str.length());
     return (score_len == file_util::WriteFile(oom_file,
                                               score_str.c_str(),
                                               score_len));
   }
 
   return false;
 }
 
 }  // namespace base