Allows client to access auth token from command line specified file.

blimp/common/fake_commandline.h

Index: blimp/common/fake_commandline.h
diff --git a/blimp/common/fake_commandline.h b/blimp/common/fake_commandline.h
new file mode 100644
index 0000000000000000000000000000000000000000..ec37ded6a77fd5b1f0498665b5a6d0a56b1eafc2
--- /dev/null
+++ b/blimp/common/fake_commandline.h
@@ -0,0 +1,37 @@
+// Copyright 2016 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 BLIMP_COMMON_FAKE_COMMANDLINE_H_
+#define BLIMP_COMMON_FAKE_COMMANDLINE_H_
+
+#include <string>
+#include <vector>
+
+#include "base/command_line.h"
+#include "base/files/file_util.h"
+#include "base/files/scoped_temp_dir.h"
+#include "blimp/common/switches.h"
+
+namespace blimp {
+
+// Creates a file in the temp directory for a given filepath switch.
+void CreateFileForSwitch(const std::string& filepath_switch,
+                         const std::string& data);
+
+// Removes the associated file for a given filepath switch.
+void RemoveFileForSwitch(const std::string& filepath_switch);
+
+// Creates and returns a CommandLine object with specified filepath switches.
+base::CommandLine CreateCommandLine(
+    const std::vector<std::string>& filepath_switches);
+
+base::FilePath GetFilepathForSwitch(const std::string& filepath_switch);
+
+const std::vector<std::string> all_filepath_switches_ =
+{engine::kClientTokenPath};
+
+base::ScopedTempDir temp_dir_;
+}  // namespace blimp
+
+#endif  // BLIMP_COMMON_FAKE_COMMANDLINE_H_