ios: Enable -Wunused-functions.

sql/recovery_unittest.cc

 // Copyright 2013 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 "base/bind.h"
 #include "base/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/logging.h"
 #include "base/strings/stringprintf.h"
 #include "sql/connection.h"
@@ skipping 30 matching lines @@
 // Dump consistent human-readable representation of the database
 // schema.  For tables or indices, this will contain the sql command
 // to create the table or index.  For certain automatic SQLite
 // structures with no sql, the name is used.
 std::string GetSchema(sql::Connection* db) {
   const char kSql[] =
       "SELECT COALESCE(sql, name) FROM sqlite_master ORDER BY 1";
   return ExecuteWithResults(db, kSql, "|", "\n");
 }
 
+#if !defined(USE_SYSTEM_SQLITE)
 int GetPageSize(sql::Connection* db) {
   sql::Statement s(db->GetUniqueStatement("PRAGMA page_size"));
   EXPECT_TRUE(s.Step());
   return s.ColumnInt(0);
 }
 
 // Get |name|'s root page number in the database.
 int GetRootPage(sql::Connection* db, const char* name) {
   const char kPageSql[] = "SELECT rootpage FROM sqlite_master WHERE name = ?";
   sql::Statement s(db->GetUniqueStatement(kPageSql));
@@ skipping 22 matching lines @@
                const char* buf, size_t page_size) {
   file_util::ScopedFILE file(file_util::OpenFile(path, "rb+"));
   if (!file.get())
     return false;
   if (0 != fseek(file.get(), (page_no - 1) * page_size, SEEK_SET))
     return false;
   if (1u != fwrite(buf, page_size, 1, file.get()))
     return false;
   return true;
 }
+#endif  // !defined(USE_SYSTEM_SQLITE)
 
 class SQLRecoveryTest : public testing::Test {
  public:
   SQLRecoveryTest() {}
 
   virtual void SetUp() {
     ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
     ASSERT_TRUE(db_.Open(db_path()));
   }
 
@@ skipping 313 matching lines @@
   EXPECT_EQ("10", ExecuteWithResults(&db(), kCountSql, "|", ","));
   EXPECT_EQ("10", ExecuteWithResults(&db(), kDistinctSql, "|", ","));
 
   // The expected value was retained.
   const char kSelectSql[] = "SELECT v FROM x WHERE id = 0";
   EXPECT_EQ("100", ExecuteWithResults(&db(), kSelectSql, "|", ","));
 }
 #endif  // !defined(USE_SYSTEM_SQLITE)
 
 }  // namespace