Fix the sqlite errors of content unittests on Android

sql/connection_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 "base/file_util.h"
 #include "base/scoped_temp_dir.h"
 #include "sql/connection.h"
 #include "sql/statement.h"
+#include "sql/meta_table.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/sqlite/sqlite3.h"
 
 class SQLConnectionTest : public testing::Test {
  public:
   SQLConnectionTest() {}
 
   void SetUp() {
     ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
     ASSERT_TRUE(db_.Open(db_path()));
@@ skipping 233 matching lines @@
   const char *kQuery = "SELECT COUNT(*) FROM foo";
   sql::Statement s(other_db.GetUniqueStatement(kQuery));
   ASSERT_TRUE(s.Step());
   ASSERT_FALSE(db().Raze());
 
   // Complete the statement unlocks the database.
   ASSERT_FALSE(s.Step());
   ASSERT_TRUE(db().Raze());
 }
 
+#if defined(OS_ANDROID)
+TEST_F(SQLConnectionTest, SetTempDirForSQL) {
+
+  sql::MetaTable meta_table;
+  // Below call needs a temporary directory in sqlite3
+  // On Android, it can pass only when the temporary directory is set.
+  // Otherwise, sqlite3 doesn't find the correct directory to store
+  // temporary files and will report the error 'unable to open
+  // database file'.
+  ASSERT_TRUE(meta_table.Init(&db(), 4, 4));
+}
+#endif
+
 // TODO(shess): Spin up a background thread to hold other_db, to more
 // closely match real life.  That would also allow testing
 // RazeWithTimeout().