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Side by Side Diff: components/prefs/scoped_user_pref_update.cc

Issue 1645073005: Revert of Move base/prefs to components/prefs (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 4 years, 10 months ago
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1 // Copyright 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "base/prefs/scoped_user_pref_update.h"
6
7 #include "base/logging.h"
8 #include "base/prefs/pref_notifier.h"
9 #include "base/prefs/pref_service.h"
10
11 namespace subtle {
12
13 ScopedUserPrefUpdateBase::ScopedUserPrefUpdateBase(PrefService* service,
14 const std::string& path)
15 : service_(service), path_(path), value_(NULL) {
16 DCHECK(service_->CalledOnValidThread());
17 }
18
19 ScopedUserPrefUpdateBase::~ScopedUserPrefUpdateBase() {
20 Notify();
21 }
22
23 base::Value* ScopedUserPrefUpdateBase::GetValueOfType(base::Value::Type type) {
24 DCHECK(CalledOnValidThread());
25 if (!value_)
26 value_ = service_->GetMutableUserPref(path_, type);
27 return value_;
28 }
29
30 void ScopedUserPrefUpdateBase::Notify() {
31 if (value_) {
32 service_->ReportUserPrefChanged(path_);
33 value_ = NULL;
34 }
35 }
36
37 } // namespace subtle
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