Convert //extensions/browser from scoped_ptr to std::unique_ptr

extensions/browser/value_store/leveldb_value_store.cc

Index: extensions/browser/value_store/leveldb_value_store.cc
diff --git a/extensions/browser/value_store/leveldb_value_store.cc b/extensions/browser/value_store/leveldb_value_store.cc
index a65aa8b85b90690796d14a09461a2e1246ea5658..8ab753e4c8c784c697a4d4d25fe8cbe150245713 100644
--- a/extensions/browser/value_store/leveldb_value_store.cc
+++ b/extensions/browser/value_store/leveldb_value_store.cc
@@ -79,10 +79,10 @@ ValueStore::ReadResult LeveldbValueStore::Get(
   if (!status.ok())
     return MakeReadResult(status);
 
-  scoped_ptr<base::DictionaryValue> settings(new base::DictionaryValue());
+  std::unique_ptr<base::DictionaryValue> settings(new base::DictionaryValue());
 
   for (const std::string& key : keys) {
-    scoped_ptr<base::Value> setting;
+    std::unique_ptr<base::Value> setting;
     status.Merge(Read(key, &setting));
     if (!status.ok())
       return MakeReadResult(status);
@@ -101,12 +101,12 @@ ValueStore::ReadResult LeveldbValueStore::Get() {
     return MakeReadResult(status);
 
   base::JSONReader json_reader;
-  scoped_ptr<base::DictionaryValue> settings(new base::DictionaryValue());
+  std::unique_ptr<base::DictionaryValue> settings(new base::DictionaryValue());
 
-  scoped_ptr<leveldb::Iterator> it(db()->NewIterator(read_options()));
+  std::unique_ptr<leveldb::Iterator> it(db()->NewIterator(read_options()));
   for (it->SeekToFirst(); it->Valid(); it->Next()) {
     std::string key = it->key().ToString();
-    scoped_ptr<base::Value> value =
+    std::unique_ptr<base::Value> value =
         json_reader.Read(StringPiece(it->value().data(), it->value().size()));
     if (!value) {
       return MakeReadResult(
@@ -135,7 +135,7 @@ ValueStore::WriteResult LeveldbValueStore::Set(WriteOptions options,
     return MakeWriteResult(status);
 
   leveldb::WriteBatch batch;
-  scoped_ptr<ValueStoreChangeList> changes(new ValueStoreChangeList());
+  std::unique_ptr<ValueStoreChangeList> changes(new ValueStoreChangeList());
   status.Merge(AddToBatch(options, key, value, &batch, changes.get()));
   if (!status.ok())
     return MakeWriteResult(status);
@@ -155,7 +155,7 @@ ValueStore::WriteResult LeveldbValueStore::Set(
     return MakeWriteResult(status);
 
   leveldb::WriteBatch batch;
-  scoped_ptr<ValueStoreChangeList> changes(new ValueStoreChangeList());
+  std::unique_ptr<ValueStoreChangeList> changes(new ValueStoreChangeList());
 
   for (base::DictionaryValue::Iterator it(settings);
        !it.IsAtEnd(); it.Advance()) {
@@ -184,10 +184,10 @@ ValueStore::WriteResult LeveldbValueStore::Remove(
     return MakeWriteResult(status);
 
   leveldb::WriteBatch batch;
-  scoped_ptr<ValueStoreChangeList> changes(new ValueStoreChangeList());
+  std::unique_ptr<ValueStoreChangeList> changes(new ValueStoreChangeList());
 
   for (const std::string& key : keys) {
-    scoped_ptr<base::Value> old_value;
+    std::unique_ptr<base::Value> old_value;
     status.Merge(Read(key, &old_value));
     if (!status.ok())
       return MakeWriteResult(status);
@@ -209,7 +209,7 @@ ValueStore::WriteResult LeveldbValueStore::Remove(
 ValueStore::WriteResult LeveldbValueStore::Clear() {
   DCHECK_CURRENTLY_ON(BrowserThread::FILE);
 
-  scoped_ptr<ValueStoreChangeList> changes(new ValueStoreChangeList());
+  std::unique_ptr<ValueStoreChangeList> changes(new ValueStoreChangeList());
 
   ReadResult read_result = Get();
   if (!read_result->status().ok())
@@ -218,7 +218,7 @@ ValueStore::WriteResult LeveldbValueStore::Clear() {
   base::DictionaryValue& whole_db = read_result->settings();
   while (!whole_db.empty()) {
     std::string next_key = base::DictionaryValue::Iterator(whole_db).key();
-    scoped_ptr<base::Value> next_value;
+    std::unique_ptr<base::Value> next_value;
     whole_db.RemoveWithoutPathExpansion(next_key, &next_value);
     changes->push_back(ValueStoreChange(next_key, next_value.release(), NULL));
   }
@@ -274,7 +274,7 @@ ValueStore::Status LeveldbValueStore::AddToBatch(
   bool write_new_value = true;
 
   if (!(options & NO_GENERATE_CHANGES)) {
-    scoped_ptr<base::Value> old_value;
+    std::unique_ptr<base::Value> old_value;
     Status status = Read(key, &old_value);
     if (!status.ok())
       return status;