'alignContent' defaults to 'flex-start' instead of 'stretch' ;

src/Layout-test-utils.js

@@ -371,13 +371,13 @@ var layoutTestUtils = (function() {
     div.style.display = 'flex';
     div.style.flexDirection = 'column';
     div.style.alignItems = 'flex-start';
-    div.style.alignContent = 'stretch';
+    div.style.alignContent = 'flex-start';
 
     var span = document.createElement('span');
     span.style.display = 'flex';
     span.style.flexDirection = 'column';
     span.style.alignItems = 'flex-start';
-    span.style.alignContent = 'stretch';
+    span.style.alignContent = 'flex-start';
     span.innerText = text;
 
     div.appendChild(span);

src/Layout.c

@@ -35,7 +35,7 @@ static bool eq(float a, float b) {
 
 void init_css_node(css_node_t *node) {
   node->style.align_items = CSS_ALIGN_STRETCH;
-  node->style.align_content = CSS_ALIGN_STRETCH;
+  node->style.align_content = CSS_ALIGN_FLEX_START;
 
   // Some of the fields default to undefined and not 0
   node->style.dimensions[CSS_WIDTH] = CSS_UNDEFINED;

src/Layout.js

@@ -148,7 +148,7 @@ var computeLayout = (function() {
     if ('alignContent' in node.style) {
       return node.style.alignContent;
     }
-    return 'stretch';
+    return 'flex-start';
   }
 
   function getAlignItem(node, child) {

src/java/src/com/facebook/csslayout/CSSStyle.java

@@ -15,7 +15,7 @@ public class CSSStyle {
 
   public CSSFlexDirection flexDirection = CSSFlexDirection.COLUMN;
   public CSSJustify justifyContent = CSSJustify.FLEX_START;
-  public CSSAlign alignContent = CSSAlign.STRETCH;
+  public CSSAlign alignContent = CSSAlign.FLEX_START;
   public CSSAlign alignItems = CSSAlign.STRETCH;
   public CSSAlign alignSelf = CSSAlign.AUTO;
   public CSSPositionType positionType = CSSPositionType.RELATIVE;