Remove all //blimp code.

blimp/common/blob_cache/id_util.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/blob_cache/id_util.h"
-
-#include "base/strings/string_number_conversions.h"
-#include "base/strings/string_piece.h"
-#include "base/strings/string_util.h"
-#include "blimp/common/blob_cache/blob_cache.h"
-#include "crypto/sha2.h"
-
-namespace blimp {
-
-const BlobId CalculateBlobId(const void* data, size_t data_size) {
-  return crypto::SHA256HashString(
-      base::StringPiece(reinterpret_cast<const char*>(data), data_size));
-}
-
-const BlobId CalculateBlobId(const std::string& data) {
-  return crypto::SHA256HashString(data);
-}
-
-const std::string BlobIdToString(const BlobId& id) {
-  DCHECK(IsValidBlobId(id)) << "Invalid blob ID: " << id;
-  return base::ToLowerASCII(base::HexEncode(id.data(), id.length()));
-}
-
-bool IsValidBlobId(const BlobId& id) {
-  return crypto::kSHA256Length == id.length();
-}
-
-}  // namespace blimp