Add initial prototype for the GN meta-buildsystem.

tools/gn/config_values.h

Index: tools/gn/config_values.h
diff --git a/tools/gn/config_values.h b/tools/gn/config_values.h
new file mode 100644
index 0000000000000000000000000000000000000000..e7c17122af0f724d11d5b629dc0507fbb6d64364
--- /dev/null
+++ b/tools/gn/config_values.h
@@ -0,0 +1,50 @@
+// 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.
+
+#ifndef TOOLS_GN_CONFIG_VALUES_H_
+#define TOOLS_GN_CONFIG_VALUES_H_
+
+#include <string>
+#include <vector>
+
+#include "base/basictypes.h"
+#include "tools/gn/source_dir.h"
+
+// Holds the values (includes, defines, compiler flags, etc.) for a given
+// config or target.
+class ConfigValues {
+ public:
+  ConfigValues();
+  ~ConfigValues();
+
+  const std::vector<SourceDir>& includes() const { return includes_; }
+  void swap_in_includes(std::vector<SourceDir>* lo) { includes_.swap(*lo); }
+
+  const std::vector<std::string>& defines() const { return defines_; }
+  void swap_in_defines(std::vector<std::string>* d) { defines_.swap(*d); }
+
+  const std::vector<std::string>& cflags() const { return cflags_; }
+  void swap_in_cflags(std::vector<std::string>* lo) { cflags_.swap(*lo); }
+
+  const std::vector<std::string>& cflags_c() const { return cflags_c_; }
+  void swap_in_cflags_c(std::vector<std::string>* lo) { cflags_c_.swap(*lo); }
+
+  const std::vector<std::string>& cflags_cc() const { return cflags_cc_; }
+  void swap_in_cflags_cc(std::vector<std::string>* lo) { cflags_cc_.swap(*lo); }
+
+  const std::vector<std::string>& ldflags() const { return ldflags_; }
+  void swap_in_ldflags(std::vector<std::string>* lo) { ldflags_.swap(*lo); }
+
+ private:
+  std::vector<SourceDir> includes_;
+  std::vector<std::string> defines_;
+  std::vector<std::string> cflags_;
+  std::vector<std::string> cflags_c_;
+  std::vector<std::string> cflags_cc_;
+  std::vector<std::string> ldflags_;
+
+  DISALLOW_COPY_AND_ASSIGN(ConfigValues);
+};
+
+#endif  // TOOLS_GN_CONFIG_VALUES_H_