Fix a missed test, re-add manual change to Pigeon generation per pack…

…age docs

packages/webview_flutter/webview_flutter_android/android/src/main/java/io/flutter/plugins/webviewflutter/AndroidWebkitLibrary.g.kt

@@ -127,6 +127,10 @@ class AndroidWebkitLibraryPigeonInstanceManager(
    */
   fun <T> remove(identifier: Long): T? {
     logWarningIfFinalizationListenerHasStopped()
+    val instance: Any? = getInstance(identifier)
+    if (instance is WebViewProxyApi.WebViewPlatformView) {
+      instance.destroy()
+    }
     return strongInstances.remove(identifier) as T?
   }
 

packages/webview_flutter/webview_flutter_android/android/src/test/java/io/flutter/plugins/webviewflutter/WebViewClientTest.java

@@ -48,7 +48,8 @@ public void onReceivedError() {
     final android.webkit.WebResourceError error = mock(WebResourceError.class);
     instance.onReceivedError(webView, request, error);
 
-    verify(mockApi).onReceivedError(eq(instance), eq(webView), eq(request), eq(error), any());
+    verify(mockApi)
+        .onReceivedRequestError(eq(instance), eq(webView), eq(request), eq(error), any());
   }
 
   @Test