remove unnecessary new from samples (flutter#818)

packages/cloud_firestore/README.md

@@ -44,15 +44,15 @@ Binding a `CollectionReference` to a `ListView`:
 class BookList extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
-    return new StreamBuilder<QuerySnapshot>(
+    return StreamBuilder<QuerySnapshot>(
       stream: Firestore.instance.collection('books').snapshots(),
       builder: (BuildContext context, AsyncSnapshot<QuerySnapshot> snapshot) {
-        if (!snapshot.hasData) return new Text('Loading...');
-        return new ListView(
+        if (!snapshot.hasData) return Text('Loading...');
+        return ListView(
           children: snapshot.data.documents.map((DocumentSnapshot document) {
-            return new ListTile(
-              title: new Text(document['title']),
-              subtitle: new Text(document['author']),
+            return ListTile(
+              title: Text(document['title']),
+              subtitle: Text(document['author']),
             );
           }).toList(),
         );

packages/firebase_admob/README.md

@@ -16,21 +16,21 @@ FirebaseAdMob.instance.initialize(appId: appId);
 ```
 
 ## Using banners and interstitials
-Banner and interstitial ads can be configured with target information. 
+Banner and interstitial ads can be configured with target information.
 And in the example below, the ads are given test ad unit IDs for a quick start.
 
-```
-MobileAdTargetingInfo targetingInfo = new MobileAdTargetingInfo(
+```dart
+MobileAdTargetingInfo targetingInfo = MobileAdTargetingInfo(
   keywords: <String>['flutterio', 'beautiful apps'],
   contentUrl: 'https://flutter.io',
-  birthday: new DateTime.now(),
+  birthday: DateTime.now(),
   childDirected: false,
   designedForFamilies: false,
   gender: MobileAdGender.male, // or MobileAdGender.female, MobileAdGender.unknown
   testDevices: <String>[], // Android emulators are considered test devices
 );
 
-BannerAd myBanner = new BannerAd(
+BannerAd myBanner = BannerAd(
   // Replace the testAdUnitId with an ad unit id from the AdMob dash.
   // https://developers.google.com/admob/android/test-ads
   // https://developers.google.com/admob/ios/test-ads
@@ -42,7 +42,7 @@ BannerAd myBanner = new BannerAd(
   },
 );
 
-InterstitialAd myInterstitial = new InterstitialAd(
+InterstitialAd myInterstitial = InterstitialAd(
   // Replace the testAdUnitId with an ad unit id from the AdMob dash.
   // https://developers.google.com/admob/android/test-ads
   // https://developers.google.com/admob/ios/test-ads

packages/firebase_admob/lib/firebase_admob.dart

@@ -404,7 +404,7 @@ class RewardedVideoAd {
 ///
 /// Apps can create, load, and show mobile ads. For example:
 /// ```
-/// BannerAd myBanner = new BannerAd(unitId: myBannerAdUnitId)
+/// BannerAd myBanner = BannerAd(unitId: myBannerAdUnitId)
 ///   ..load()
 ///   ..show();
 /// ```

packages/firebase_analytics/README.md

@@ -18,12 +18,12 @@ To track `PageRoute` transitions, add a `FirebaseAnalyticsObserver` to the list
 
 ```dart
 
-FirebaseAnalytics analytics = new FirebaseAnalytics();
+FirebaseAnalytics analytics = FirebaseAnalytics();
 
 MaterialApp(
-  home: new MyAppHome(),
+  home: MyAppHome(),
   navigatorObservers: [
-    new FirebaseAnalyticsObserver(analytics: analytics),
+    FirebaseAnalyticsObserver(analytics: analytics),
   ],
 );
 ```

packages/firebase_analytics/lib/firebase_analytics.dart

@@ -36,7 +36,7 @@ class FirebaseAnalytics {
   ///
   /// Example:
   ///
-  ///     FirebaseAnalytics analytics = new FirebaseAnalytics();
+  ///     FirebaseAnalytics analytics = FirebaseAnalytics();
   ///     analytics.android?.setMinimumSessionDuration(200000);
   final FirebaseAnalyticsAndroid android;
 

packages/firebase_analytics/lib/observer.dart

@@ -27,9 +27,9 @@ String defaultNameExtractor(RouteSettings settings) => settings.name;
 /// ```dart
 /// Navigator.pushNamed(context, '/contact/123');
 ///
-/// Navigator.push(context, new MaterialPageRoute(
-///   settings: new RouteSettings(name: '/contact/123',
-///   builder: new ContactDetail(123)))),
+/// Navigator.push(context, MaterialPageRoute(
+///   settings: RouteSettings(name: '/contact/123',
+///   builder: ContactDetail(123)))),
 ///
 /// Navigator.pop(context);
 /// ```
@@ -38,9 +38,9 @@ String defaultNameExtractor(RouteSettings settings) => settings.name;
 /// you're using a [MaterialApp]:
 /// ```dart
 /// MaterialApp(
-///   home: new MyAppHome(),
+///   home: MyAppHome(),
 ///   navigatorObservers: [
-///     new FirebaseAnalyticsObserver(analytics: service.analytics),
+///     FirebaseAnalyticsObserver(analytics: service.analytics),
 ///   ],
 /// );
 /// ```

packages/firebase_dynamic_links/README.md

@@ -29,28 +29,28 @@ https://example.page.link/WXYZ
 You can create a Dynamic Link programmatically by setting the following parameters and using the `DynamicLinkParameters.buildUrl()` method.
 
 ```dart
-final DynamicLinkParameters parameters = new DynamicLinkParameters(
+final DynamicLinkParameters parameters = DynamicLinkParameters(
   domain: 'abc123.app.goo.gl',
   link: Uri.parse('https://example.com/'),
-  androidParameters: new AndroidParameters(
+  androidParameters: AndroidParameters(
       packageName: 'com.example.android',
       minimumVersion: 125,
   ),
-  iosParameters: new IosParameters(
+  iosParameters: IosParameters(
       bundleId: 'com.example.ios',
       minimumVersion: '1.0.1',
       appStoreId: '123456789',
   ),
-  googleAnalyticsParameters: new GoogleAnalyticsParameters(
+  googleAnalyticsParameters: GoogleAnalyticsParameters(
       campaign: 'example-promo',
       medium: 'social',
       source: 'orkut',
   ),
-  itunesConnectAnalyticsParameters: new ItunesConnectAnalyticsParameters(
+  itunesConnectAnalyticsParameters: ItunesConnectAnalyticsParameters(
     providerToken: '123456',
     campaignToken: 'example-promo',
   ),
-  socialMetaTagParameters:  new SocialMetaTagParameters(
+  socialMetaTagParameters:  SocialMetaTagParameters(
     title: 'Example of a Dynamic Link',
     description: 'This link works whether app is installed or not!',
   ),
@@ -71,7 +71,7 @@ To shorten a long Dynamic Link, use the DynamicLinkParameters.shortenUrl method.
 ```dart
 final ShortDynamicLink shortenedLink = await DynamicLinkParameters.shortenUrl(
   Uri.parse('https://example.page.link/?link=https://example.com/&apn=com.example.android&ibn=com.example.ios'),
-  new DynamicLinkParametersOptions(ShortDynamicLinkPathLength.unguessable),
+  DynamicLinkParametersOptions(ShortDynamicLinkPathLength.unguessable),
 );
 
 final Uri shortUrl = shortenedLink.shortUrl;
@@ -101,11 +101,11 @@ applinks:YOUR_SUBDOMAIN.page.link
 
 ```dart
 void main() {
-  runApp(new MaterialApp(
+  runApp(MaterialApp(
     title: 'Dynamic Links Example',
     routes: <String, WidgetBuilder>{
-      '/': (BuildContext context) => new MyHomeWidget(), // Default home route
-      '/helloworld': (BuildContext context) => new MyHelloWorldWidget(),
+      '/': (BuildContext context) => MyHomeWidget(), // Default home route
+      '/helloworld': (BuildContext context) => MyHelloWorldWidget(),
     },
   ));
 }

packages/firebase_messaging/README.md

@@ -52,7 +52,7 @@ From your Dart code, you need to import the plugin and instantiate it:
 ```dart
 import 'package:firebase_messaging/firebase_messaging.dart';
 
-final FirebaseMessaging _firebaseMessaging = new FirebaseMessaging();
+final FirebaseMessaging _firebaseMessaging = FirebaseMessaging();
 ```
 
 Next, you should probably request permissions for receiving Push Notifications. For this, call `_firebaseMessaging.requestNotificationPermissions()`. This will bring up a permissions dialog for the user to confirm on iOS. It's a no-op on Android. Last, but not least, register `onMessage`, `onResume`, and `onLaunch` callbacks via `_firebaseMessaging.configure()` to listen for incoming messages (see table below for more information).

packages/firebase_performance/README.md

@@ -70,11 +70,10 @@ class _MyAppState extends State<MyApp> {
 .
 .
   Future<void> testHttpMetric() async {
-    final _MetricHttpClient metricHttpClient =
-        new _MetricHttpClient(new Client());
+    final _MetricHttpClient metricHttpClient = _MetricHttpClient(Client());
 
     final Request request =
-        new Request("SEND", Uri.parse("https://www.google.com"));
+        Request("SEND", Uri.parse("https://www.google.com"));
 
     metricHttpClient.send(request);
   }