rename some base _linux files to _posix so that others can use it too

base/base_paths_posix.cc

 // Copyright (c) 2011 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/base_paths.h"
 
 #include <ostream>
 #include <string>
 
 #include "build/build_config.h"
@@ skipping 13 matching lines @@
 #endif
 
 namespace base {
 
 #if defined(OS_LINUX)
 const char kSelfExe[] = "/proc/self/exe";
 #endif
 
 // The name of this file relative to the source root. This is used for checking
 // that the source checkout is in the correct place.
-static const char kThisSourceFile[] = "base/base_paths_linux.cc";
+static const char kThisSourceFile[] = "base/base_paths_posix.cc";
 
 bool PathProviderPosix(int key, FilePath* result) {
   FilePath path;
   switch (key) {
     case base::FILE_EXE:
     case base::FILE_MODULE: {  // TODO(evanm): is this correct?
 #if defined(OS_LINUX)
       FilePath bin_dir;
       if (!file_util::ReadSymbolicLink(FilePath(kSelfExe), &bin_dir)) {
         NOTREACHED() << "Unable to resolve " << kSelfExe << ".";
@@ skipping 81 matching lines @@
       scoped_ptr<base::Environment> env(base::Environment::Create());
       FilePath cache_dir(base::nix::GetXDGDirectory(env.get(), "XDG_CACHE_HOME",
                                                     ".cache"));
       *result = cache_dir;
       return true;
   }
   return false;
 }
 
 }  // namespace base