Cleanup: Remove unneeded headers from base/ (part 1)

base/crypto/symmetric_key_mac.cc

 // Copyright (c) 2010 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 "base/crypto/symmetric_key.h"
 
 #include <CommonCrypto/CommonCryptor.h>
 #include <CoreFoundation/CFString.h>
 #include <Security/cssm.h>
 
 #include "base/crypto/cssm_init.h"
 #include "base/logging.h"
-#include "base/rand_util.h"
 
 namespace {
 
 CSSM_KEY_TYPE CheckKeyParams(base::SymmetricKey::Algorithm algorithm,
                              size_t key_size_in_bits) {
   if (algorithm == base::SymmetricKey::AES) {
     CHECK(key_size_in_bits == 128 ||
         key_size_in_bits == 192 ||
         key_size_in_bits == 256)
         << "Invalid key size " << key_size_in_bits << " bits";
@@ skipping 123 matching lines @@
 bool SymmetricKey::GetRawKey(std::string* raw_key) {
   *raw_key = key_;
   return true;
 }
 
 CSSM_DATA SymmetricKey::cssm_data() const {
   return StringToData(key_);
 }
 
 }  // namespace base