Remove invalid calls to the _count method. This is a short term fix to make the build green. Blois…

sdk/lib/indexed_db/dartium/indexed_db_dartium.dart

Index: sdk/lib/indexed_db/dartium/indexed_db_dartium.dart
diff --git a/sdk/lib/indexed_db/dartium/indexed_db_dartium.dart b/sdk/lib/indexed_db/dartium/indexed_db_dartium.dart
index f2968ddf5a171094e57ee0ac1296c326582400db..3da9cb10e6cca1155a1c0dcfd11974d636dfade2 100644
--- a/sdk/lib/indexed_db/dartium/indexed_db_dartium.dart
+++ b/sdk/lib/indexed_db/dartium/indexed_db_dartium.dart
@@ -394,12 +394,7 @@ class Index extends NativeFieldWrapperClass1 {
   @DomName('IDBIndex.count')
   Future<int> count([key_OR_range]) {
    try {
-      var request;
-      if (key_OR_range != null) {
-        request = _count(key_OR_range);
-      } else {
-        request = _count();
-      }
+      var request = _count(key_OR_range);
       return _completeRequest(request);
     } catch (e, stacktrace) {
       return new Future.error(e, stacktrace);
@@ -446,12 +441,7 @@ class Index extends NativeFieldWrapperClass1 {
     } else {
       key_OR_range = range;
     }
-    var request;
-    if (direction == null) {
-      request = _openCursor(key_OR_range);
-    } else {
-      request = _openCursor(key_OR_range, direction);
-    }
+    var request = _openCursor(key_OR_range, direction);
     return ObjectStore._cursorStreamFromResult(request, autoAdvance);
   }
 
@@ -473,12 +463,7 @@ class Index extends NativeFieldWrapperClass1 {
     } else {
       key_OR_range = range;
     }
-    var request;
-    if (direction == null) {
-      request = _openKeyCursor(key_OR_range);
-    } else {
-      request = _openKeyCursor(key_OR_range, direction);
-    }
+    var request = _openKeyCursor(key_OR_range, direction);
     return ObjectStore._cursorStreamFromResult(request, autoAdvance);
   }