Added Web SQL to the docs.json generation.

sdk/lib/web_sql/dartium/web_sql_dartium.dart

Index: sdk/lib/web_sql/dartium/web_sql_dartium.dart
diff --git a/sdk/lib/web_sql/dartium/web_sql_dartium.dart b/sdk/lib/web_sql/dartium/web_sql_dartium.dart
index c25f0ae17ffd12befa2b40c8cadf2e8bf1093f4c..579b82580dcc7aa4b127aec89f264421deb2f81a 100644
--- a/sdk/lib/web_sql/dartium/web_sql_dartium.dart
+++ b/sdk/lib/web_sql/dartium/web_sql_dartium.dart
@@ -82,6 +82,18 @@ class SqlDatabase extends NativeFieldWrapperClass1 {
   @DocsEditable
   String get version native "Database_version_Getter";
 
+  /**
+   * Atomically update the database version to [newVersion], asynchronously
+   * running [callback] on the [SqlTransaction] representing this
+   * [changeVersion] transaction.
+   *
+   * If [callback] runs successfully, then [successCallback] is called.
+   * Otherwise, [errorCallback] is called.
+   *
+   * [oldVersion] should match the database's current [version] exactly.
+   *
+   * * [Database.changeVersion](http://www.w3.org/TR/webdatabase/#dom-database-changeversion) from W3C.
+   */
   @DomName('Database.changeVersion')
   @DocsEditable
   void changeVersion(String oldVersion, String newVersion, [SqlTransactionCallback callback, SqlTransactionErrorCallback errorCallback, VoidCallback successCallback]) native "Database_changeVersion_Callback";