IndexedDB: Switch key/value handling from vector<char> to std::string

content/browser/indexed_db/leveldb/leveldb_write_batch.cc

Index: content/browser/indexed_db/leveldb/leveldb_write_batch.cc
diff --git a/content/browser/indexed_db/leveldb/leveldb_write_batch.cc b/content/browser/indexed_db/leveldb/leveldb_write_batch.cc
index b15c4faeb26925877dbe9fd4f733b21d43dc993d..4f0df9d806f4fb504d0fdd41c6e1d9f13208deab 100644
--- a/content/browser/indexed_db/leveldb/leveldb_write_batch.cc
+++ b/content/browser/indexed_db/leveldb/leveldb_write_batch.cc
@@ -4,7 +4,7 @@
 
 #include "content/browser/indexed_db/leveldb/leveldb_write_batch.h"
 
-#include "content/browser/indexed_db/leveldb/leveldb_slice.h"
+#include "base/strings/string_piece.h"
 #include "third_party/leveldatabase/src/include/leveldb/slice.h"
 #include "third_party/leveldatabase/src/include/leveldb/write_batch.h"
 
@@ -19,16 +19,16 @@ LevelDBWriteBatch::LevelDBWriteBatch()
 
 LevelDBWriteBatch::~LevelDBWriteBatch() {}
 
-static leveldb::Slice MakeSlice(const LevelDBSlice& s) {
+static leveldb::Slice MakeSlice(const base::StringPiece& s) {
   return leveldb::Slice(s.begin(), s.end() - s.begin());
 }
 
-void LevelDBWriteBatch::Put(const LevelDBSlice& key,
-                            const LevelDBSlice& value) {
+void LevelDBWriteBatch::Put(const base::StringPiece& key,
+                            const base::StringPiece& value) {
   write_batch_->Put(MakeSlice(key), MakeSlice(value));
 }
 
-void LevelDBWriteBatch::Remove(const LevelDBSlice& key) {
+void LevelDBWriteBatch::Remove(const base::StringPiece& key) {
   write_batch_->Delete(MakeSlice(key));
 }