Enable the new TextPainter

packages/flutter/lib/src/painting/text_painter.dart

@@ -119,7 +119,7 @@ class StyledTextSpan extends TextSpan {
   }
 }
 
-const bool _kEnableNewTextPainter = false;
+const bool _kEnableNewTextPainter = true;
 
 abstract class TextPainter {
 

packages/flutter/lib/src/painting/text_style.dart

@@ -166,8 +166,7 @@ class TextStyle {
 
   ui.ParagraphStyle get paragraphStyle {
     return new ui.ParagraphStyle(
-      // TODO(abarth): Restore once the analyzer can see the new dart:ui interface.
-      // textAlign: textAlign,
+      textAlign: textAlign,
       textBaseline: textBaseline,
       lineHeight: height
     );