scons: excise more scons references from the code base

base/base_paths_linux.cc

 // Copyright (c) 2010 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 <unistd.h>
 #if defined(OS_FREEBSD)
 #include <sys/param.h>
 #include <sys/sysctl.h>
@@ skipping 58 matching lines @@
         path = FilePath(cr_source_root);
         if (file_util::PathExists(path.Append(kThisSourceFile))) {
           *result = path;
           return true;
         } else {
           LOG(WARNING) << "CR_SOURCE_ROOT is set, but it appears to not "
                        << "point to the correct source root directory.";
         }
       }
       // On POSIX, unit tests execute two levels deep from the source root.
-      // For example:  sconsbuild/{Debug|Release}/net_unittest
+      // For example:  out/{Debug|Release}/net_unittest
       if (PathService::Get(base::DIR_EXE, &path)) {
         path = path.DirName().DirName();
         if (file_util::PathExists(path.Append(kThisSourceFile))) {
           *result = path;
           return true;
         }
       }
       // In a case of WebKit-only checkout, executable files are put into
       // WebKit/out/{Debug|Release}, and we should return WebKit/WebKit/chromium
       // for DIR_SOURCE_ROOT.
@@ skipping 19 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