Convert string16 to base::string16 in content.

content/browser/indexed_db/indexed_db_backing_store.h

Index: content/browser/indexed_db/indexed_db_backing_store.h
diff --git a/content/browser/indexed_db/indexed_db_backing_store.h b/content/browser/indexed_db/indexed_db_backing_store.h
index 9ea71f11ac65fd6b18c42b5734b9cf320bd9fcf2..00b15a383bb8be386f038cb4777735e2dd034d2d 100644
--- a/content/browser/indexed_db/indexed_db_backing_store.h
+++ b/content/browser/indexed_db/indexed_db_backing_store.h
@@ -69,19 +69,19 @@ class CONTENT_EXPORT IndexedDBBackingStore
       const GURL& origin_url,
       LevelDBFactory* factory);
 
-  virtual std::vector<string16> GetDatabaseNames();
-  virtual bool GetIDBDatabaseMetaData(const string16& name,
+  virtual std::vector<base::string16> GetDatabaseNames();
+  virtual bool GetIDBDatabaseMetaData(const base::string16& name,
                                       IndexedDBDatabaseMetadata* metadata,
                                       bool* success) WARN_UNUSED_RESULT;
-  virtual bool CreateIDBDatabaseMetaData(const string16& name,
-                                         const string16& version,
+  virtual bool CreateIDBDatabaseMetaData(const base::string16& name,
+                                         const base::string16& version,
                                          int64 int_version,
                                          int64* row_id);
   virtual bool UpdateIDBDatabaseIntVersion(
       IndexedDBBackingStore::Transaction* transaction,
       int64 row_id,
       int64 int_version);
-  virtual bool DeleteDatabase(const string16& name);
+  virtual bool DeleteDatabase(const base::string16& name);
 
   bool GetObjectStores(int64 database_id,
                        IndexedDBDatabaseMetadata::ObjectStoreMap* map)
@@ -90,7 +90,7 @@ class CONTENT_EXPORT IndexedDBBackingStore
       IndexedDBBackingStore::Transaction* transaction,
       int64 database_id,
       int64 object_store_id,
-      const string16& name,
+      const base::string16& name,
       const IndexedDBKeyPath& key_path,
       bool auto_increment);
   virtual bool DeleteObjectStore(
@@ -160,7 +160,7 @@ class CONTENT_EXPORT IndexedDBBackingStore
                            int64 database_id,
                            int64 object_store_id,
                            int64 index_id,
-                           const string16& name,
+                           const base::string16& name,
                            const IndexedDBKeyPath& key_path,
                            bool is_unique,
                            bool is_multi_entry) WARN_UNUSED_RESULT;