chromeos: Stop checking out Libcros

chrome/browser/DEPS

 include_rules = [
   "+breakpad",
   "+chrome/app",
   "+chrome/app/locales",
   "+chrome/installer",
   "+chrome/personalization",
   "+chrome/profile_import",
   "+chrome/tools/profiles",  # For history unit tests.
   "+chromeos",
   "+content/public/browser",
   "+google_update",
   "+grit",  # For generated headers
   "+installer_util_strings",  # For generated headers
   "+policy",  # For generated headers and source
   "+ppapi/c",  # For various types.
   "+ppapi/proxy",
   "+ppapi/shared_impl/api_id.h",
   # Defines some types that are marshalled over IPC.
   "+ppapi/shared_impl/ppp_flash_browser_operations_shared.h",
   "+rlz",
   "+sandbox/linux",
   "+sandbox/src",  # The path doesn't say it, but this is the Windows sandbox.
   "+skia/ext",
   "+skia/include",
   "+sync/api",  # Sync API files.
   "+sync/protocol",  # Sync protobuf files.
-  "+third_party/cros",
   "+third_party/cros_system_api",
   "+webkit/database",
   "+webkit/dom_storage",  # Defines an ENABLE_NEW_DOM_STORAGE_BACKEND flag.
   "+webkit/forms",  # Defines some types that are marshalled over IPC.
   "+webkit/glue",  # Defines some types that are marshalled over IPC.
   "+webkit/plugins",  # Defines some types that are marshalled over IPC.
   "+webkit/quota",
   "+xib_localizers", # For generated mac localization helpers
 
   # TODO(jam): Need to remove all these and use only content/public. BUG=98716
@@ skipping 36 matching lines @@
   "+third_party/libevent",  # For the remote V8 debugging server
   "+third_party/libjingle",
   "+third_party/protobuf/src/google/protobuf",
   "+third_party/sqlite",
   "+third_party/undoview",
 
   # FIXME: this is used by a browser_test. We need to find a better structure
   # for this include.
   "+chrome/renderer/visitedlink_slave.h",
 ]