Remove all //blimp code.

blimp/common/get_client_auth_token.cc

-// 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.
-
-#include "blimp/common/get_client_auth_token.h"
-
-#include "base/files/file_path.h"
-#include "base/files/file_util.h"
-#include "base/strings/string_util.h"
-#include "blimp/common/switches.h"
-
-namespace blimp {
-
-std::string GetClientAuthToken(const base::CommandLine& cmd_line) {
-  std::string file_contents;
-  const base::FilePath path = cmd_line.GetSwitchValuePath(kClientAuthTokenPath);
-  if (!base::ReadFileToString(path, &file_contents)) {
-    LOG(ERROR) << "Could not read client auth token file at "
-               << (path.empty() ? "(not provided)" : path.AsUTF8Unsafe());
-  }
-  return base::CollapseWhitespaceASCII(file_contents, true);
-}
-
-}  // namespace blimp