IndexedDB: Switch key/value handling from vector<char> to std::string

content/content_browser.gypi

 # Copyright (c) 2012 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.
 
 {
   'dependencies': [
     'browser/speech/proto/speech_proto.gyp:speech_proto',
     '../base/base.gyp:base_static',
     '../crypto/crypto.gyp:crypto',
     '../google_apis/google_apis.gyp:google_apis',
@@ skipping 573 matching lines @@
     'browser/indexed_db/indexed_db_transaction.cc',
     'browser/indexed_db/indexed_db_transaction.h',
     'browser/indexed_db/indexed_db_transaction_coordinator.cc',
     'browser/indexed_db/indexed_db_transaction_coordinator.h',
     'browser/indexed_db/leveldb/avltree.h',
     'browser/indexed_db/leveldb/fixed_array.h',
     'browser/indexed_db/leveldb/leveldb_comparator.h',
     'browser/indexed_db/leveldb/leveldb_database.cc',
     'browser/indexed_db/leveldb/leveldb_database.h',
     'browser/indexed_db/leveldb/leveldb_iterator.h',
-    'browser/indexed_db/leveldb/leveldb_slice.h',
     'browser/indexed_db/leveldb/leveldb_transaction.cc',
     'browser/indexed_db/leveldb/leveldb_transaction.h',
     'browser/indexed_db/leveldb/leveldb_write_batch.cc',
     'browser/indexed_db/leveldb/leveldb_write_batch.h',
     'browser/loader/async_resource_handler.cc',
     'browser/loader/async_resource_handler.h',
     'browser/loader/buffered_resource_handler.cc',
     'browser/loader/buffered_resource_handler.h',
     'browser/loader/certificate_resource_handler.cc',
     'browser/loader/certificate_resource_handler.h',
@@ skipping 844 matching lines @@
         '../third_party/speex/speex.gyp:libspeex',
       ],
     }],
     ['linux_use_libgps==1', {
       'dependencies': [
         '../build/linux/system.gyp:libgps',
       ],
     }],
   ],
 }