54 bool PrefsBase::GetString(const std::string_view key, string* value) const {  in GetString()  argument
55   return storage_->GetKey(key, value);  in GetString()
58 bool PrefsBase::SetString(std::string_view key, std::string_view value) {  in SetString()  argument
59   TEST_AND_RETURN_FALSE(storage_->SetKey(key, value));  in SetString()
60   const auto observers_for_key = observers_.find(key);  in SetString()
64       observer->OnPrefSet(key);  in SetString()
69 bool PrefsBase::GetInt64(const std::string_view key, int64_t* value) const {  in GetInt64()  argument
71   if (!GetString(key, &str_value))  in GetInt64()
78 bool PrefsBase::SetInt64(std::string_view key, const int64_t value) {  in SetInt64()  argument
79   return SetString(key, base::NumberToString(value));  in SetInt64()
82 bool PrefsBase::GetBoolean(std::string_view key, bool* value) const {  in GetBoolean()  argument
84   if (!GetString(key, &str_value))  in GetBoolean()
98 bool PrefsBase::SetBoolean(std::string_view key, const bool value) {  in SetBoolean()  argument
99   return SetString(key, value ? "true" : "false");  in SetBoolean()
102 bool PrefsBase::Exists(std::string_view key) const {  in Exists()
103   return storage_->KeyExists(key);  in Exists()
106 bool PrefsBase::Delete(std::string_view key) {  in Delete()  argument
107   TEST_AND_RETURN_FALSE(storage_->DeleteKey(key));  in Delete()
108   const auto observers_for_key = observers_.find(key);  in Delete()
112       observer->OnPrefDeleted(key);  in Delete()
124     for (const auto& key : namespace_keys) {  in Delete()  local
125       auto last_key_seperator = key.find_last_of(kKeySeparator);  in Delete()
127           pref_key == key.substr(last_key_seperator + 1)) {  in Delete()
128         success = Delete(key) && success;  in Delete()
139 void PrefsBase::AddObserver(std::string_view key, ObserverInterface* observer) {  in AddObserver()  argument
140   observers_[std::string{key}].push_back(observer);  in AddObserver()
143 void PrefsBase::RemoveObserver(std::string_view key,  in RemoveObserver()  argument
146       observers_[std::string{key}];  in RemoveObserver()
170 bool Prefs::FileStorage::GetKey(std::string_view key, string* value) const {  in GetKey()  argument
172   TEST_AND_RETURN_FALSE(GetFileNameForKey(key, &filename));  in GetKey()
197 bool Prefs::FileStorage::SetKey(std::string_view key, std::string_view value) {  in SetKey()  argument
199   TEST_AND_RETURN_FALSE(GetFileNameForKey(key, &filename));  in SetKey()
210 bool Prefs::FileStorage::KeyExists(std::string_view key) const {  in KeyExists()
212   TEST_AND_RETURN_FALSE(GetFileNameForKey(key, &filename));  in KeyExists()
216 bool Prefs::FileStorage::DeleteKey(std::string_view key) {  in DeleteKey()  argument
218   TEST_AND_RETURN_FALSE(GetFileNameForKey(key, &filename));  in DeleteKey()
227 bool Prefs::FileStorage::GetFileNameForKey(std::string_view key,  in GetFileNameForKey()  argument
230   TEST_AND_RETURN_FALSE(!key.empty());  in GetFileNameForKey()
231   for (char c : key)  in GetFileNameForKey()
235       base::FilePath::StringPieceType(key.data(), key.size()));  in GetFileNameForKey()
241 bool MemoryPrefs::MemoryStorage::GetKey(std::string_view key,  in GetKey()  argument
243   auto it = values_.find(key);  in GetKey()
266 bool MemoryPrefs::MemoryStorage::SetKey(std::string_view key,  in SetKey()  argument
268   values_[std::string{key}] = value;  in SetKey()
272 bool MemoryPrefs::MemoryStorage::KeyExists(std::string_view key) const {  in KeyExists()
273   return values_.find(key) != values_.end();  in KeyExists()
276 bool MemoryPrefs::MemoryStorage::DeleteKey(std::string_view key) {  in DeleteKey()  argument
277   auto it = values_.find(key);  in DeleteKey()