Convert string16 to base::string16 in content.

content/common/indexed_db/indexed_db_key_path.cc

Index: content/common/indexed_db/indexed_db_key_path.cc
diff --git a/content/common/indexed_db/indexed_db_key_path.cc b/content/common/indexed_db/indexed_db_key_path.cc
index b01de7340d60961efc9c2c8c9bb127ed5d647174..3783d4281a8fc7090e3a9645fc99e24dc10036cc 100644
--- a/content/common/indexed_db/indexed_db_key_path.cc
+++ b/content/common/indexed_db/indexed_db_key_path.cc
@@ -14,20 +14,20 @@ using blink::WebIDBKeyPathTypeString;
 
 IndexedDBKeyPath::IndexedDBKeyPath() : type_(WebIDBKeyPathTypeNull) {}
 
-IndexedDBKeyPath::IndexedDBKeyPath(const string16& string)
+IndexedDBKeyPath::IndexedDBKeyPath(const base::string16& string)
     : type_(WebIDBKeyPathTypeString), string_(string) {}
 
-IndexedDBKeyPath::IndexedDBKeyPath(const std::vector<string16>& array)
+IndexedDBKeyPath::IndexedDBKeyPath(const std::vector<base::string16>& array)
     : type_(WebIDBKeyPathTypeArray), array_(array) {}
 
 IndexedDBKeyPath::~IndexedDBKeyPath() {}
 
-const std::vector<string16>& IndexedDBKeyPath::array() const {
+const std::vector<base::string16>& IndexedDBKeyPath::array() const {
   DCHECK(type_ == blink::WebIDBKeyPathTypeArray);
   return array_;
 }
 
-const string16& IndexedDBKeyPath::string() const {
+const base::string16& IndexedDBKeyPath::string() const {
   DCHECK(type_ == blink::WebIDBKeyPathTypeString);
   return string_;
 }