Move crypto_helpers from sync to base

chrome/browser/sync/syncable/directory_backing_store.cc

-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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 "chrome/browser/sync/syncable/directory_backing_store.h"
 
 #include "build/build_config.h"
 
 #if defined(OS_MACOSX)
 #include <CoreFoundation/CoreFoundation.h>
 #endif
 
 #include <limits>
 
 #include "base/file_util.h"
 #include "base/hash_tables.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/stl_util-inl.h"
 #include "base/string_number_conversions.h"
 #include "base/string_util.h"
 #include "chrome/browser/sync/protocol/bookmark_specifics.pb.h"
 #include "chrome/browser/sync/protocol/service_constants.h"
 #include "chrome/browser/sync/protocol/sync.pb.h"
 #include "chrome/browser/sync/syncable/syncable-inl.h"
 #include "chrome/browser/sync/syncable/syncable_columns.h"
-#include "chrome/browser/sync/util/crypto_helpers.h"
+#include "chrome/common/random.h"
 #include "chrome/common/sqlite_utils.h"
 #include "third_party/sqlite/sqlite3.h"
 
 // Sometimes threads contend on the DB lock itself, especially when one thread
 // is calling SaveChanges.  In the worst case scenario, the user can put his
 // laptop to sleep during db contention, and wake up the laptop days later, so
 // infinity seems like the best choice here.
 const int kDirectoryBackingStoreBusyTimeoutMs = std::numeric_limits<int>::max();
 
 using std::string;
@@ skipping 16 matching lines @@
   if (SQLITE_OK != result)
     return result;
   do {
     result = statement.step();
   } while (SQLITE_ROW == result);
 
   return result;
 }
 
 string GenerateCacheGUID() {
-  return Generate128BitRandomHexString();
+  return Generate128BitRandomBase64String();
 }
 
 }  // namespace
 
 
 // Iterate over the fields of |entry| and bind each to |statement| for
 // updating.  Returns the number of args bound.
 int BindFields(const EntryKernel& entry, SQLStatement* statement) {
   int index = 0;
   int i = 0;
@@ skipping 1162 matching lines @@
       "id TEXT primary key, "
       "name TEXT, "
       "store_birthday TEXT, "
       "db_create_version TEXT, "
       "db_create_time INT, "
       "next_id INT default -2, "
       "cache_guid TEXT )");
   return ExecQuery(load_dbhandle_, query.c_str());
 }
 }  // namespace syncable