Remove redundant 'flex' prefixes on enum values.

sky/sdk/lib/rendering/flex.dart

 // Copyright 2015 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.
 
 import 'dart:math' as math;
 
 import 'box.dart';
 import 'object.dart';
 
 class FlexBoxParentData extends BoxParentData with ContainerParentDataMixin<RenderBox> {
   int flex;
 
   void merge(FlexBoxParentData other) {
     if (other.flex != null)
       flex = other.flex;
     super.merge(other);
   }
 
   String toString() => '${super.toString()}; flex=$flex';
 }
 
 enum FlexDirection { horizontal, vertical }
 
 enum FlexJustifyContent {
-  flexStart,
-  flexEnd,
+  start,
+  end,
   center,
   spaceBetween,
   spaceAround,
 }
 
 enum FlexAlignItems {
-  flexStart,
-  flexEnd,
+  start,
+  end,
   center,
 }
 
 typedef double _ChildSizingFunction(RenderBox child, BoxConstraints constraints);
 
 class RenderFlex extends RenderBox with ContainerRenderObjectMixin<RenderBox, FlexBoxParentData>,
                                         RenderBoxContainerDefaultsMixin<RenderBox, FlexBoxParentData> {
   // lays out RenderBox children using flexible layout
 
   RenderFlex({
     FlexDirection direction: FlexDirection.horizontal,
-    FlexJustifyContent justifyContent: FlexJustifyContent.flexStart,
+    FlexJustifyContent justifyContent: FlexJustifyContent.start,
     FlexAlignItems alignItems: FlexAlignItems.center
   }) : _direction = direction, _justifyContent = justifyContent, _alignItems = alignItems;
 
   FlexDirection _direction;
   FlexDirection get direction => _direction;
   void set direction (FlexDirection value) {
     if (_direction != value) {
       _direction = value;
       markNeedsLayout();
     }
@@ skipping 262 matching lines @@
       assert(child.parentData is FlexBoxParentData);
       child = child.parentData.nextSibling;
     }
 
     // Section 8.2: Axis Alignment using the justify-content property
     double remainingSpace = math.max(0.0, freeSpace - usedSpace);
     double leadingSpace;
     double betweenSpace;
     child = firstChild;
     switch (_justifyContent) {
-      case FlexJustifyContent.flexStart:
+      case FlexJustifyContent.start:
         leadingSpace = 0.0;
         betweenSpace = 0.0;
         break;
-      case FlexJustifyContent.flexEnd:
+      case FlexJustifyContent.end:
         leadingSpace = remainingSpace;
         betweenSpace = 0.0;
         break;
       case FlexJustifyContent.center:
         leadingSpace = remainingSpace / 2.0;
         betweenSpace = 0.0;
         break;
       case FlexJustifyContent.spaceBetween:
         leadingSpace = 0.0;
         betweenSpace = totalChildren > 1 ? remainingSpace / (totalChildren - 1) : 0.0;
@@ skipping 15 matching lines @@
         break;
     }
 
     // Position elements. For now, center the flex items in the cross direction
     double childMainPosition = leadingSpace;
     child = firstChild;
     while (child != null) {
       assert(child.parentData is FlexBoxParentData);
       double childCrossPosition;
       switch (_alignItems) {
-        case FlexAlignItems.flexStart:
+        case FlexAlignItems.start:
           childCrossPosition = 0.0;
           break;
-        case FlexAlignItems.flexEnd:
+        case FlexAlignItems.end:
           childCrossPosition = crossSize - _getCrossSize(child);
           break;
         case FlexAlignItems.center:
           childCrossPosition = crossSize / 2.0 - _getCrossSize(child) / 2.0;
           break;
       }
       switch (_direction) {
         case FlexDirection.horizontal:
           child.parentData.position = new Point(childMainPosition, childCrossPosition);
           break;
         case FlexDirection.vertical:
           child.parentData.position = new Point(childCrossPosition, childMainPosition);
           break;
       }
       childMainPosition += _getMainSize(child) + betweenSpace;
       child = child.parentData.nextSibling;
     }
   }
 
   void hitTestChildren(HitTestResult result, { Point position }) {
     defaultHitTestChildren(result, position: position);
   }
 
   void paint(PaintingCanvas canvas, Offset offset) {
     defaultPaint(canvas, offset);
   }
 }