Fix analyzer warnings (all in existing code)

packages/webview_flutter/webview_flutter_android/lib/src/android_webview_api_impls.dart

diff --git a/packages/webview_flutter/webview_flutter_android/lib/src/android_webview_api_impls.dart b/packages/webview_flutter/webview_flutter_android/lib/src/android_webview_api_impls.dart
index c9fe2ef..eb0fef5 100644
--- a/packages/webview_flutter/webview_flutter_android/lib/src/android_webview_api_impls.dart
+++ b/packages/webview_flutter/webview_flutter_android/lib/src/android_webview_api_impls.dart
@@ -128,10 +128,9 @@
 class WebViewHostApiImpl extends WebViewHostApi {
   /// Constructs a [WebViewHostApiImpl].
   WebViewHostApiImpl({
-    BinaryMessenger? binaryMessenger,
+    super.binaryMessenger,
     InstanceManager? instanceManager,
-  })  : instanceManager = instanceManager ?? JavaObject.globalInstanceManager,
-        super(binaryMessenger: binaryMessenger);
+  })  : instanceManager = instanceManager ?? JavaObject.globalInstanceManager;
 
   /// Maintains instances stored to communicate with java objects.
   final InstanceManager instanceManager;
@@ -342,10 +341,9 @@
 class WebSettingsHostApiImpl extends WebSettingsHostApi {
   /// Constructs a [WebSettingsHostApiImpl].
   WebSettingsHostApiImpl({
-    BinaryMessenger? binaryMessenger,
+    super.binaryMessenger,
     InstanceManager? instanceManager,
-  })  : instanceManager = instanceManager ?? JavaObject.globalInstanceManager,
-        super(binaryMessenger: binaryMessenger);
+  })  : instanceManager = instanceManager ?? JavaObject.globalInstanceManager;
 
   /// Maintains instances stored to communicate with java objects.
   final InstanceManager instanceManager;
@@ -484,10 +482,9 @@
 class JavaScriptChannelHostApiImpl extends JavaScriptChannelHostApi {
   /// Constructs a [JavaScriptChannelHostApiImpl].
   JavaScriptChannelHostApiImpl({
-    BinaryMessenger? binaryMessenger,
+    super.binaryMessenger,
     InstanceManager? instanceManager,
-  })  : instanceManager = instanceManager ?? JavaObject.globalInstanceManager,
-        super(binaryMessenger: binaryMessenger);
+  })  : instanceManager = instanceManager ?? JavaObject.globalInstanceManager;
 
   /// Maintains instances stored to communicate with java objects.
   final InstanceManager instanceManager;
@@ -529,10 +526,9 @@
 class WebViewClientHostApiImpl extends WebViewClientHostApi {
   /// Constructs a [WebViewClientHostApiImpl].
   WebViewClientHostApiImpl({
-    BinaryMessenger? binaryMessenger,
+    super.binaryMessenger,
     InstanceManager? instanceManager,
-  })  : instanceManager = instanceManager ?? JavaObject.globalInstanceManager,
-        super(binaryMessenger: binaryMessenger);
+  })  : instanceManager = instanceManager ?? JavaObject.globalInstanceManager;
 
   /// Maintains instances stored to communicate with java objects.
   final InstanceManager instanceManager;
@@ -706,10 +702,9 @@
 class DownloadListenerHostApiImpl extends DownloadListenerHostApi {
   /// Constructs a [DownloadListenerHostApiImpl].
   DownloadListenerHostApiImpl({
-    BinaryMessenger? binaryMessenger,
+    super.binaryMessenger,
     InstanceManager? instanceManager,
-  })  : instanceManager = instanceManager ?? JavaObject.globalInstanceManager,
-        super(binaryMessenger: binaryMessenger);
+  })  : instanceManager = instanceManager ?? JavaObject.globalInstanceManager;
 
   /// Maintains instances stored to communicate with java objects.
   final InstanceManager instanceManager;
@@ -761,10 +756,9 @@
 class WebChromeClientHostApiImpl extends WebChromeClientHostApi {
   /// Constructs a [WebChromeClientHostApiImpl].
   WebChromeClientHostApiImpl({
-    BinaryMessenger? binaryMessenger,
+    super.binaryMessenger,
     InstanceManager? instanceManager,
-  })  : instanceManager = instanceManager ?? JavaObject.globalInstanceManager,
-        super(binaryMessenger: binaryMessenger);
+  })  : instanceManager = instanceManager ?? JavaObject.globalInstanceManager;
 
   /// Maintains instances stored to communicate with java objects.
   final InstanceManager instanceManager;
@@ -811,10 +805,9 @@
 class WebStorageHostApiImpl extends WebStorageHostApi {
   /// Constructs a [WebStorageHostApiImpl].
   WebStorageHostApiImpl({
-    BinaryMessenger? binaryMessenger,
+    super.binaryMessenger,
     InstanceManager? instanceManager,
-  })  : instanceManager = instanceManager ?? JavaObject.globalInstanceManager,
-        super(binaryMessenger: binaryMessenger);
+  })  : instanceManager = instanceManager ?? JavaObject.globalInstanceManager;
 
   /// Maintains instances stored to communicate with java objects.
   final InstanceManager instanceManager;

packages/webview_flutter/webview_flutter_android/lib/src/v4/src/android_webview_cookie_manager.dart

diff --git a/packages/webview_flutter/webview_flutter_android/lib/src/v4/src/android_webview_cookie_manager.dart b/packages/webview_flutter/webview_flutter_android/lib/src/v4/src/android_webview_cookie_manager.dart
index 9a64a62..127b7e4 100644
--- a/packages/webview_flutter/webview_flutter_android/lib/src/v4/src/android_webview_cookie_manager.dart
+++ b/packages/webview_flutter/webview_flutter_android/lib/src/v4/src/android_webview_cookie_manager.dart
@@ -44,10 +44,10 @@
   /// with the default [AndroidWebViewCookieManager] constructor.
   @visibleForTesting
   AndroidWebViewCookieManager.fromNativeApi(
-    AndroidWebViewCookieManagerCreationParams params, {
+    AndroidWebViewCookieManagerCreationParams super.params, {
     required CookieManager cookieManager,
   })  : _cookieManager = cookieManager,
-        super.implementation(params);
+        super.implementation();
 
   final CookieManager _cookieManager;
 

packages/webview_flutter/webview_flutter_android/lib/webview_android_widget.dart

diff --git a/packages/webview_flutter/webview_flutter_android/lib/webview_android_widget.dart b/packages/webview_flutter/webview_flutter_android/lib/webview_android_widget.dart
index 4760ccf..8070a11 100644
--- a/packages/webview_flutter/webview_flutter_android/lib/webview_android_widget.dart
+++ b/packages/webview_flutter/webview_flutter_android/lib/webview_android_widget.dart
@@ -16,7 +16,7 @@
 class WebViewAndroidWidget extends StatefulWidget {
   /// Constructs a [WebViewAndroidWidget].
   const WebViewAndroidWidget({
-    Key? key,
+    super.key,
     required this.creationParams,
     required this.useHybridComposition,
     required this.callbacksHandler,
@@ -26,7 +26,7 @@
     @visibleForTesting
         this.flutterAssetManager = const android_webview.FlutterAssetManager(),
     @visibleForTesting this.webStorage,
-  }) : super(key: key);
+  });
 
   /// Initial parameters used to setup the WebView.
   final CreationParams creationParams;
@@ -567,10 +567,9 @@
     extends android_webview.JavaScriptChannel {
   /// Creates a [WebViewAndroidJavaScriptChannel].
   WebViewAndroidJavaScriptChannel(
-    String channelName,
+    super.channelName,
     this.javascriptChannelRegistry,
   ) : super(
-          channelName,
           postMessage: withWeakRefenceTo(
             javascriptChannelRegistry,
             (WeakReference<JavascriptChannelRegistry> weakReference) {