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// Copyright 2013 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 "ios/web/public/browser_state.h"
namespace web {
namespace {
// Private key used for safe conversion of base::SupportsUserData to
// web::BrowserState in web::BrowserState::FromSupportsUserData.
const char kBrowserStateIdentifierKey[] = "BrowserStateIdentifierKey";
}
BrowserState::BrowserState() {
// (Refcounted)?BrowserStateKeyedServiceFactories needs to be able to convert
// a base::SupportsUserData to a BrowserState. Moreover, since the factories
// may be passed a content::BrowserContext instead of a BrowserState, attach
// an empty object to this via a private key.
SetUserData(kBrowserStateIdentifierKey, new SupportsUserData::Data);
}
BrowserState::~BrowserState() {
}
// static
BrowserState* BrowserState::FromSupportsUserData(
base::SupportsUserData* supports_user_data) {
if (!supports_user_data ||
!supports_user_data->GetUserData(kBrowserStateIdentifierKey)) {
return nullptr;
}
return static_cast<BrowserState*>(supports_user_data);
}
} // namespace web
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