Move PathExists to base namespace.

base/base_paths_posix.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.
 
 // Defines base::PathProviderPosix, default path provider on POSIX OSes that
 // don't have their own base_paths_OS.cc implementation (i.e. all but Mac and
 // Android).
 
 #include <ostream>
 #include <string>
@@ skipping 62 matching lines @@
       return true;
 #endif
     }
     case base::DIR_SOURCE_ROOT: {
       // Allow passing this in the environment, for more flexibility in build
       // tree configurations (sub-project builds, gyp --output_dir, etc.)
       scoped_ptr<base::Environment> env(base::Environment::Create());
       std::string cr_source_root;
       if (env->GetVar("CR_SOURCE_ROOT", &cr_source_root)) {
         path = FilePath(cr_source_root);
-        if (file_util::PathExists(path)) {
+        if (base::PathExists(path)) {
           *result = path;
           return true;
         } else {
           DLOG(WARNING) << "CR_SOURCE_ROOT is set, but it appears to not "
                         << "point to a directory.";
         }
       }
       // On POSIX, unit tests execute two levels deep from the source root.
       // For example:  out/{Debug|Release}/net_unittest
       if (PathService::Get(base::DIR_EXE, &path)) {
@@ skipping 16 matching lines @@
       return true;
     }
     case base::DIR_HOME:
       *result = file_util::GetHomeDir();
       return true;
   }
   return false;
 }
 
 }  // namespace base