Revert 214254 "Add initial prototype for the GN meta-buildsystem."

trunk/src/tools/gn/settings.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 "tools/gn/settings.h"
-
-#include "base/logging.h"
-#include "tools/gn/filesystem_utils.h"
-
-Settings::Settings(const BuildSettings* build_settings,
-                   const Toolchain* toolchain,
-                   const std::string& output_subdir_name)
-    : build_settings_(build_settings),
-      toolchain_(toolchain),
-      target_os_(WIN),  // FIXME(brettw) set this properly.
-      import_manager_(),
-      base_config_(this) {
-  DCHECK(output_subdir_name.find('/') == std::string::npos);
-  if (output_subdir_name.empty()) {
-    toolchain_output_dir_ = build_settings->build_dir();
-  } else {
-    // We guarantee this ends in a slash.
-    toolchain_output_subdir_.value().append(output_subdir_name);
-    toolchain_output_subdir_.value().push_back('/');
-
-    toolchain_output_dir_ = SourceDir(build_settings->build_dir().value() +
-                                      toolchain_output_subdir_.value());
-  }
-  // The output dir will be null in some tests and when invoked to parsed
-  // one-off data without doing generation.
-  if (!toolchain_output_dir_.is_null())
-    toolchain_gen_dir_ = SourceDir(toolchain_output_dir_.value() + "gen/");
-}
-
-Settings::~Settings() {
-}
-
-