Change ConnectionInterface typehint to Connection.

ConnectionInterface does not provide driver() method
which *Sql() methods require.

src/Database/Schema/TableSchema.php

@@ -14,9 +14,9 @@
  */
 namespace Cake\Database\Schema;
 
+use Cake\Database\Connection;
 use Cake\Database\Exception;
 use Cake\Database\Type;
-use Cake\Datasource\ConnectionInterface;
 
 /**
  * Represents a single table in a database schema.
@@ -824,11 +824,11 @@ public function temporary($temporary = null)
      * Uses the connection to access the schema dialect
      * to generate platform specific SQL.
      *
-     * @param \Cake\Datasource\ConnectionInterface $connection The connection to generate SQL for
+     * @param \Cake\Database\Connection $connection The connection to generate SQL for.
      * @return array List of SQL statements to create the table and the
      *    required indexes.
      */
-    public function createSql(ConnectionInterface $connection)
+    public function createSql(Connection $connection)
     {
         $dialect = $connection->driver()->schemaDialect();
         $columns = $constraints = $indexes = [];
@@ -851,10 +851,10 @@ public function createSql(ConnectionInterface $connection)
      * Uses the connection to access the schema dialect to generate platform
      * specific SQL.
      *
-     * @param \Cake\Datasource\ConnectionInterface $connection The connection to generate SQL for.
+     * @param \Cake\Database\Connection $connection The connection to generate SQL for.
      * @return array SQL to drop a table.
      */
-    public function dropSql(ConnectionInterface $connection)
+    public function dropSql(Connection $connection)
     {
         $dialect = $connection->driver()->schemaDialect();
 
@@ -864,10 +864,10 @@ public function dropSql(ConnectionInterface $connection)
     /**
      * Generate the SQL statements to truncate a table
      *
-     * @param \Cake\Datasource\ConnectionInterface $connection The connection to generate SQL for.
+     * @param \Cake\Database\Connection $connection The connection to generate SQL for.
      * @return array SQL to truncate a table.
      */
-    public function truncateSql(ConnectionInterface $connection)
+    public function truncateSql(Connection $connection)
     {
         $dialect = $connection->driver()->schemaDialect();
 
@@ -877,10 +877,10 @@ public function truncateSql(ConnectionInterface $connection)
     /**
      * Generate the SQL statements to add the constraints to the table
      *
-     * @param \Cake\Datasource\ConnectionInterface $connection The connection to generate SQL for.
+     * @param \Cake\Database\Connection $connection The connection to generate SQL for.
      * @return array SQL to drop a table.
      */
-    public function addConstraintSql(ConnectionInterface $connection)
+    public function addConstraintSql(Connection $connection)
     {
         $dialect = $connection->driver()->schemaDialect();
 
@@ -890,10 +890,10 @@ public function addConstraintSql(ConnectionInterface $connection)
     /**
      * Generate the SQL statements to drop the constraints to the table
      *
-     * @param \Cake\Datasource\ConnectionInterface $connection The connection to generate SQL for.
+     * @param \Cake\Database\Connection $connection The connection to generate SQL for.
      * @return array SQL to drop a table.
      */
-    public function dropConstraintSql(ConnectionInterface $connection)
+    public function dropConstraintSql(Connection $connection)
     {
         $dialect = $connection->driver()->schemaDialect();