update elements and fix some bugs

lib/src/iron-list/test/physical-count.html

Index: lib/src/iron-list/test/physical-count.html
diff --git a/lib/src/iron-list/test/physical-count.html b/lib/src/iron-list/test/physical-count.html
index a9f7c2870e5e431923c578c3226eff4c21ef771f..11bcaa9262300fd02b50877b7f282ebbbbef716d 100644
--- a/lib/src/iron-list/test/physical-count.html
+++ b/lib/src/iron-list/test/physical-count.html
@@ -28,7 +28,7 @@ subject to an additional IP rights grant found at http://polymer.github.io/PATEN
 
   <test-fixture id="trivialList">
     <template>
-      <x-list item-height="1" list-height="40"></x-list>
+      <x-list item-height="2" list-height="300"></x-list>
     </template>
   </test-fixture>
 
@@ -44,12 +44,13 @@ subject to an additional IP rights grant found at http://polymer.github.io/PATEN
 
       test('increase pool size', function(done) {
         list.items = buildDataSet(1000);
+
         flush(function() {
           var lastItem = getLastItemFromList(list);
           var lastItemHeight = lastItem.offsetHeight;
           var expectedFinalItem = list.offsetHeight/lastItemHeight;
 
-          assert.equal(lastItemHeight, 1);
+          assert.equal(lastItemHeight, 2);
           assert.equal(getLastItemFromList(list).textContent, expectedFinalItem);
           done();
         });
@@ -57,19 +58,19 @@ subject to an additional IP rights grant found at http://polymer.github.io/PATEN
 
       test('increase pool size on resize', function(done) {
         list.items = buildDataSet(1000);
-       
+
         flush(function() {
           // change the height of the list
           container.listHeight = 500;
           // resize
-          list.fire('resize');
+          list.fire('iron-resize');
 
           flush(function() {
             var lastItem = getLastItemFromList(list);
             var lastItemHeight = lastItem.offsetHeight;
-            var expectedFinalItem = list.offsetHeight/lastItemHeight - 1;
-            
-            assert.equal(lastItemHeight, 1);
+            var expectedFinalItem = list.offsetHeight/lastItemHeight;
+
+            assert.equal(lastItemHeight, 2);
             assert.equal(getLastItemFromList(list).textContent, expectedFinalItem);
             done();
           });