[sqlite] Respect the gyp and gn component switch.

sql/sql.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [
     {
       'target_name': 'sql',
       'type': '<(component)',
       'dependencies': [
         '../base/base.gyp:base',
         '../third_party/sqlite/sqlite.gyp:sqlite',
         '../base/third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations',
       ],
       'export_dependent_settings': [
         '../base/base.gyp:base',
       ],
       'defines': [ 'SQL_IMPLEMENTATION' ],
       'sources': [
         'connection.cc',
         'connection.h',
         'error_delegate_util.cc',
         'error_delegate_util.h',
         'init_status.h',
         'meta_table.cc',
         'meta_table.h',
-        'proxy.cc',
-        'proxy.h',
         'recovery.cc',
         'recovery.h',
         'statement.cc',
         'statement.h',
         'transaction.cc',
         'transaction.h',
       ],
       'include_dirs': [
         '..',
       ],
@@ skipping 112 matching lines @@
             '../build/isolate.gypi',
           ],
           'sources': [
             'sql_unittests.isolate',
           ],
         },
       ],
     }],
   ],
 }