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diff --git a/include/clang/Tooling/CommonOptionsParser.h b/include/clang/Tooling/CommonOptionsParser.h
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+//===- CommonOptionsParser.h - common options for clang tools -*- C++ -*-=====//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+//  This file implements the CommonOptionsParser class used to parse common
+//  command-line options for clang tools, so that they can be run as separate
+//  command-line applications with a consistent common interface for handling
+//  compilation database and input files.
+//
+//  It provides a common subset of command-line options, common algorithm
+//  for locating a compilation database and source files, and help messages
+//  for the basic command-line interface.
+//
+//  It creates a CompilationDatabase and reads common command-line options.
+//
+//  This class uses the Clang Tooling infrastructure, see
+//    http://clang.llvm.org/docs/HowToSetupToolingForLLVM.html
+//  for details on setting it up with LLVM source tree.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TOOLS_CLANG_INCLUDE_CLANG_TOOLING_COMMONOPTIONSPARSER_H
+#define LLVM_TOOLS_CLANG_INCLUDE_CLANG_TOOLING_COMMONOPTIONSPARSER_H
+
+#include "clang/Tooling/CompilationDatabase.h"
+
+namespace clang {
+namespace tooling {
+/// \brief A parser for options common to all command-line Clang tools.
+///
+/// Parses a common subset of command-line arguments, locates and loads a
+/// compilation commands database and runs a tool with user-specified action. It
+/// also contains a help message for the common command-line options.
+///
+/// An example of usage:
+/// \code
+/// #include "clang/Frontend/FrontendActions.h"
+/// #include "clang/Tooling/CommonOptionsParser.h"
+/// #include "llvm/Support/CommandLine.h"
+///
+/// using namespace clang::tooling;
+/// using namespace llvm;
+///
+/// static cl::extrahelp CommonHelp(CommonOptionsParser::HelpMessage);
+/// static cl::extrahelp MoreHelp("\nMore help text...");
+/// static cl:opt<bool> YourOwnOption(...);
+/// ...
+///
+/// int main(int argc, const char **argv) {
+///   CommonOptionsParser OptionsParser(argc, argv);
+///   ClangTool Tool(OptionsParser.GetCompilations(),
+///                  OptionsParser.GetSourcePathListi());
+///   return Tool.run(newFrontendActionFactory<clang::SyntaxOnlyAction>());
+/// }
+/// \endcode
+class CommonOptionsParser {
+public:
+  /// \brief Parses command-line, initializes a compilation database.
+  /// This constructor can change argc and argv contents, e.g. consume
+  /// command-line options used for creating FixedCompilationDatabase.
+  /// This constructor exits program in case of error.
+  CommonOptionsParser(int &argc, const char **argv);
+
+  /// Returns a reference to the loaded compilations database.
+  CompilationDatabase &GetCompilations() {
+    return *Compilations;
+  }
+
+  /// Returns a list of source file paths to process.
+  std::vector<std::string> GetSourcePathList() {
+    return SourcePathList;
+  }
+
+  static const char *const HelpMessage;
+
+private:
+  llvm::OwningPtr<CompilationDatabase> Compilations;
+  std::vector<std::string> SourcePathList;
+};
+
+}  // namespace tooling
+}  // namespace clang
+
+#endif  // LLVM_TOOLS_CLANG_INCLUDE_CLANG_TOOLING_COMMONOPTIONSPARSER_H