The const will continue until morale improves (#9536)

dev/benchmarks/complex_layout/lib/main.dart

@@ -96,45 +96,45 @@ class TopBarMenu extends StatelessWidget {
     return new PopupMenuButton<String>(
       onSelected: (String value) { print('Selected: $value'); },
       itemBuilder: (BuildContext context) => <PopupMenuItem<String>>[
-        new PopupMenuItem<String>(
+        const PopupMenuItem<String>(
           value: 'Friends',
-          child: new MenuItemWithIcon(Icons.people, 'Friends', '5 new')
+          child: const MenuItemWithIcon(Icons.people, 'Friends', '5 new')
         ),
         const PopupMenuItem<String>(
           value: 'Events',
           child: const MenuItemWithIcon(Icons.event, 'Events', '12 upcoming')
         ),
-        new PopupMenuItem<String>(
+        const PopupMenuItem<String>(
           value: 'Events',
-          child: new MenuItemWithIcon(Icons.group, 'Groups', '14')
+          child: const MenuItemWithIcon(Icons.group, 'Groups', '14')
         ),
-        new PopupMenuItem<String>(
+        const PopupMenuItem<String>(
           value: 'Events',
-          child: new MenuItemWithIcon(Icons.image, 'Pictures', '12')
+          child: const MenuItemWithIcon(Icons.image, 'Pictures', '12')
         ),
-        new PopupMenuItem<String>(
+        const PopupMenuItem<String>(
           value: 'Events',
-          child: new MenuItemWithIcon(Icons.near_me, 'Nearby', '33')
+          child: const MenuItemWithIcon(Icons.near_me, 'Nearby', '33')
         ),
-        new PopupMenuItem<String>(
+        const PopupMenuItem<String>(
           value: 'Friends',
-          child: new MenuItemWithIcon(Icons.people, 'Friends', '5')
+          child: const MenuItemWithIcon(Icons.people, 'Friends', '5')
         ),
         const PopupMenuItem<String>(
           value: 'Events',
           child: const MenuItemWithIcon(Icons.event, 'Events', '12')
         ),
-        new PopupMenuItem<String>(
+        const PopupMenuItem<String>(
           value: 'Events',
-          child: new MenuItemWithIcon(Icons.group, 'Groups', '14')
+          child: const MenuItemWithIcon(Icons.group, 'Groups', '14')
         ),
-        new PopupMenuItem<String>(
+        const PopupMenuItem<String>(
           value: 'Events',
-          child: new MenuItemWithIcon(Icons.image, 'Pictures', '12')
+          child: const MenuItemWithIcon(Icons.image, 'Pictures', '12')
         ),
-        new PopupMenuItem<String>(
+        const PopupMenuItem<String>(
           value: 'Events',
-          child: new MenuItemWithIcon(Icons.near_me, 'Nearby', '33')
+          child: const MenuItemWithIcon(Icons.near_me, 'Nearby', '33')
         )
       ]
     );
@@ -234,7 +234,7 @@ class IconBar extends StatelessWidget {
         mainAxisAlignment: MainAxisAlignment.spaceBetween,
         children: <Widget>[
           const IconWithText(Icons.thumb_up, 'Like'),
-          new IconWithText(Icons.comment, 'Comment'),
+          const IconWithText(Icons.comment, 'Comment'),
           const IconWithText(Icons.share, 'Share'),
         ]
       )
@@ -530,13 +530,13 @@ class BottomBar extends StatelessWidget {
       child: new Row(
         mainAxisAlignment: MainAxisAlignment.spaceBetween,
         children: <Widget>[
-          new BottomBarButton(Icons.new_releases, 'News'),
-          new BottomBarButton(Icons.people, 'Requests'),
-          new BottomBarButton(Icons.chat, 'Messenger'),
-          new BottomBarButton(Icons.bookmark, 'Bookmark'),
-          new BottomBarButton(Icons.alarm, 'Alarm')
-        ]
-      )
+          const BottomBarButton(Icons.new_releases, 'News'),
+          const BottomBarButton(Icons.people, 'Requests'),
+          const BottomBarButton(Icons.chat, 'Messenger'),
+          const BottomBarButton(Icons.bookmark, 'Bookmark'),
+          const BottomBarButton(Icons.alarm, 'Alarm'),
+        ],
+      ),
     );
   }
 }

examples/flutter_gallery/lib/gallery/home.dart

@@ -169,10 +169,10 @@ class GalleryHomeState extends State<GalleryHome> with SingleTickerProviderState
           new SliverAppBar(
             pinned: true,
             expandedHeight: _kFlexibleSpaceMaxHeight,
-            flexibleSpace: new FlexibleSpaceBar(
+            flexibleSpace: const FlexibleSpaceBar(
               title: const Text('Flutter Gallery'),
               // TODO(abarth): Wire up to the parallax in a way that doesn't pop during hero transition.
-              background: new _AppBarBackground(animation: kAlwaysDismissedAnimation),
+              background: const _AppBarBackground(animation: kAlwaysDismissedAnimation),
             ),
           ),
           new SliverList(delegate: new SliverChildListDelegate(_galleryListItems())),

packages/flutter/test/widgets/box_sliver_mismatch_test.dart

@@ -8,9 +8,9 @@ import 'package:flutter/widgets.dart';
 void main() {
   testWidgets('Sliver in a box', (WidgetTester tester) async {
     await tester.pumpWidget(
-      new DecoratedBox(
+      const DecoratedBox(
         decoration: const BoxDecoration(),
-        child: new SliverList(
+        child: const SliverList(
           delegate: const SliverChildListDelegate(const <Widget>[]),
         ),
       ),
@@ -21,7 +21,7 @@ void main() {
     await tester.pumpWidget(
       new Row(
         children: <Widget>[
-          new SliverList(
+          const SliverList(
             delegate: const SliverChildListDelegate(const <Widget>[]),
           ),
         ],