Remove MissingTypeError to remove duplicate warnings (issue 24610)

pkg/analyzer/lib/src/task/strong/checker.dart

Index: pkg/analyzer/lib/src/task/strong/checker.dart
diff --git a/pkg/analyzer/lib/src/task/strong/checker.dart b/pkg/analyzer/lib/src/task/strong/checker.dart
index d1ebb6b1718b045a720a634e9edfa557c143975f..9cfefe83a9e8890ab90e5071ffb2652c64712c11 100644
--- a/pkg/analyzer/lib/src/task/strong/checker.dart
+++ b/pkg/analyzer/lib/src/task/strong/checker.dart
@@ -563,9 +563,7 @@ class CodeChecker extends RecursiveAstVisitor {
   @override
   void visitSuperConstructorInvocation(SuperConstructorInvocation node) {
     var element = node.staticElement;
-    if (element == null) {
-      _recordMessage(new MissingTypeError(node));
-    } else {
+    if (element != null) {
       var type = node.staticElement.type;
       checkArgumentList(node.argumentList, type);
     }
@@ -663,8 +661,6 @@ class CodeChecker extends RecursiveAstVisitor {
     if (element != null) {
       var type = rules.elementType(node.staticElement);
       checkArgumentList(arguments, type);
-    } else {
-      _recordMessage(new MissingTypeError(node));
     }
     node.visitChildren(this);
   }
@@ -920,11 +916,7 @@ class CodeChecker extends RecursiveAstVisitor {
   }
 
   DartType _getStaticType(Expression expr) {
-    var type = expr.staticType;
-    if (type == null) {
-      reporter.onError(new MissingTypeError(expr).toAnalysisError());
-    }
-    return type ?? rules.provider.dynamicType;
+    return expr.staticType ?? rules.provider.dynamicType;

[Leaf, 2015/10/16 22:21:12]

Is it a problem that we're using null aware operators in this ported over code?

[Brian Wilkerson, 2015/10/17 14:53:13]

We updated the SDK dependencies Friday, so it shouldn't be a problem anymore.

   }
 
   void _recordDynamicInvoke(AstNode node, AstNode target) {