Implement an initial extension settings API.

chrome/chrome.gyp

 # 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.
 {
   'variables': {
     'chromium_code': 1,
 
     'variables': {
       'version_py_path': 'tools/build/version.py',
       'version_path': 'VERSION',
@@ skipping 412 matching lines @@
         'chrome_resources',
         'chrome_strings',
         '../base/base.gyp:base',
         '../net/net.gyp:http_server',
         '../net/net.gyp:net',
         'theme_resources',
         'theme_resources_standard',
         '../skia/skia.gyp:skia',
         '../third_party/icu/icu.gyp:icui18n',
         '../third_party/icu/icu.gyp:icuuc',
+        '../third_party/leveldb/leveldb.gyp:leveldb',
       ],
       'include_dirs': [
         '..',
       ],
       'sources': [
         'browser/debugger/browser_list_tabcontents_provider.cc',
         'browser/debugger/browser_list_tabcontents_provider.h',
         'browser/debugger/debugger_remote_service.cc',
         'browser/debugger/debugger_remote_service.h',
         'browser/debugger/devtools_client_host.cc',
@@ skipping 1229 matching lines @@
       }],  # targets
     }],  # os_posix == 1 and OS != "mac"
   ],  # 'conditions'
 }
 
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