Remove remaining legacy SplitString calls.

[email protected] (chromeos)

Review URL: https://codereview.chromium.org/1284833004

Cr-Commit-Position: refs/heads/master@{#342983}
diff --git a/sql/connection.cc b/sql/connection.cc
index d07d425e..0cb3b131 100644
--- a/sql/connection.cc
+++ b/sql/connection.cc
@@ -1327,7 +1327,8 @@
     // it could return separate lines, so loop _and_ split.
     while (stmt.Step()) {
       std::string result(stmt.ColumnString(0));
-      base::SplitString(result, '\n', messages);
+      *messages = base::SplitString(result, "\n", base::TRIM_WHITESPACE,
+                                    base::SPLIT_WANT_ALL);
     }
     ret = stmt.Succeeded();
   }