Move ReplaceStringPlaceholders to base namespace.

components/history/core/test/history_unittest_base.cc

Index: components/history/core/test/history_unittest_base.cc
diff --git a/components/history/core/test/history_unittest_base.cc b/components/history/core/test/history_unittest_base.cc
index 040a4744407ce15c2623c3978370b0b0935baf8a..fd180346e59e73710008679c56fd6ab8a208377c 100644
--- a/components/history/core/test/history_unittest_base.cc
+++ b/components/history/core/test/history_unittest_base.cc
@@ -29,7 +29,7 @@ void HistoryUnitTestBase::ExecuteSQLScript(const base::FilePath& sql_path,
   sql_time.push_back(base::StringPrintf("%" PRId64, now));  // last_visit_time
   sql_time.push_back(base::StringPrintf("%" PRId64, now));  // visit_time
   sql_time.push_back(base::StringPrintf("%" PRId64, now));  // time_slot
-  sql = ReplaceStringPlaceholders(sql, sql_time, NULL);
+  sql = base::ReplaceStringPlaceholders(sql, sql_time, NULL);
 
   sql::Connection connection;
   ASSERT_TRUE(connection.Open(db_path));