[web] Flutter for web autocorrect support

lib/web_ui/lib/src/engine/text_editing/text_editing.dart

@@ -179,13 +179,15 @@ class InputConfiguration {
     @required this.inputType,
     @required this.inputAction,
     @required this.obscureText,
+    @required this.autocorrect,
   });
 
   InputConfiguration.fromFlutter(Map<String, dynamic> flutterInputConfiguration)
       : inputType = EngineInputType.fromName(
             flutterInputConfiguration['inputType']['name']),
         inputAction = flutterInputConfiguration['inputAction'],
-        obscureText = flutterInputConfiguration['obscureText'];
+        obscureText = flutterInputConfiguration['obscureText'],
+        autocorrect = flutterInputConfiguration['autocorrect'];
 
   /// The type of information being edited in the input control.
   final EngineInputType inputType;
@@ -195,6 +197,9 @@ class InputConfiguration {
 
   /// Whether to hide the text being edited.
   final bool obscureText;
+
+  /// Whether to  to enable autocorrection. Only available on Webkit.
+  final bool autocorrect;
 }
 
 typedef _OnChangeCallback = void Function(EditingState editingState);
@@ -372,6 +377,10 @@ class TextEditingElement {
     if (inputConfig.obscureText) {
       domElement.setAttribute('type', 'password');
     }
+    if (browserEngine == BrowserEngine.webkit && inputConfig.autocorrect) {
+      final String autocorrectValue = inputConfig.autocorrect ? 'on' : 'off';
+      domElement.setAttribute('autocorrect', autocorrectValue);
+    }
     _setStaticStyleAttributes(domElement);
     owner._setDynamicStyleAttributes(domElement);
     domRenderer.glassPaneElement.append(domElement);

lib/web_ui/test/text_editing_test.dart

@@ -26,6 +26,7 @@ final InputConfiguration singlelineConfig = InputConfiguration(
   inputType: EngineInputType.text,
   obscureText: false,
   inputAction: 'TextInputAction.done',
+  autocorrect: true,
 );
 final Map<String, dynamic> flutterSinglelineConfig =
     createFlutterConfig('text');
@@ -34,6 +35,7 @@ final InputConfiguration multilineConfig = InputConfiguration(
   inputType: EngineInputType.multiline,
   obscureText: false,
   inputAction: 'TextInputAction.newline',
+  autocorrect: true,
 );
 final Map<String, dynamic> flutterMultilineConfig =
     createFlutterConfig('multiline');
@@ -105,6 +107,7 @@ void main() {
         inputType: EngineInputType.text,
         inputAction: 'TextInputAction.done',
         obscureText: true,
+        autocorrect: true,
       );
       editingElement.enable(
         config,
@@ -263,6 +266,7 @@ void main() {
         inputType: EngineInputType.text,
         obscureText: false,
         inputAction: 'TextInputAction.done',
+        autocorrect: true,
       );
       editingElement.enable(
         config,
@@ -286,6 +290,7 @@ void main() {
         inputType: EngineInputType.multiline,
         obscureText: false,
         inputAction: 'TextInputAction.done',
+        autocorrect: true,
       );
       editingElement.enable(
         config,