Revert 214325 "Revert 214254 "Add initial prototype for the GN m..."

The issue was already fixed :)

> Revert 214254 "Add initial prototype for the GN meta-buildsystem."
>
> It broke the check_licenses step on Android (see http://build.chromium.org/p/chromium.linux/builders/Android%20Builder%20%28dbg%29/builds/39904/steps/check_licenses/logs/stdio):
>
> @@@BUILD_STEP check_licenses@@@
> > /b/build/slave/Android_Builder__dbg_/build/src/android_webview/tools/webview_licenses.py scan
> Got LicenseError "missing README.chromium or licenses.py SPECIAL_CASES entry" while scanning tools/gn/secondary/base/third_party/dynamic_annotations
> Got LicenseError "missing README.chromium or licenses.py SPECIAL_CASES entry" while scanning tools/gn/secondary/third_party/modp_b64
> < /b/build/slave/Android_Builder__dbg_/build/src/android_webview/tools/webview_licenses.py scan
> ERROR: process exited with code 2
> @@@STEP_FAILURE@@@
>
>
> > Add initial prototype for the GN meta-buildsystem.
> >
> > This is currently not hooked into the build. To build, add a reference to the
> > gn.gyp file to build/all.gyp
> >
> > R=darin@chromium.org, scottmg@chromium.org
> >
> > Review URL: https://codereview.chromium.org/21114002
>
> TBR=brettw@chromium.org
>
> Review URL: https://codereview.chromium.org/21084010

TBR=bauerb@chromium.org

Review URL: https://codereview.chromium.org/21204003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@214333 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 38 insertions, 0 deletions

diff --git a/tools/gn/settings.cc b/tools/gn/settings.cc
new file mode 100644
index 0000000..82014a7
--- /dev/null
+++ b/tools/gn/settings.cc
@@ -0,0 +1,38 @@
+// 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() {
+}
+
+