Add unistd.h include in a file using geteuid().

sql/sqlite_features_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "sql/connection.h"
@@ skipping 28 matching lines @@
 
   virtual void TearDown() {
     // If any error happened the original sql statement can be found in
     // |sql_text_|.
     EXPECT_EQ(SQLITE_OK, error_);
     db_.Close();
   }
 
   sql::Connection& db() { return db_; }
 
-  int sqlite_error() const {
-    return error_;
-  }
-
  private:
   base::ScopedTempDir temp_dir_;
   sql::Connection db_;
 
   // The error code of the most recent error.
   int error_;
   // Original statement which has caused the error.
   std::string sql_text_;
 };
 
@@ skipping 14 matching lines @@
   ASSERT_TRUE(db().Execute("CREATE VIRTUAL TABLE foo USING fts2(x)"));
 }
 #endif
 
 // fts3 is used for current history files, and also for WebDatabase.
 TEST_F(SQLiteFeaturesTest, FTS3) {
   ASSERT_TRUE(db().Execute("CREATE VIRTUAL TABLE foo USING fts3(x)"));
 }
 
 }  // namespace