Inline `_analyzeLeastUpperBoundTypes` and `_analyzeLeastUpperBound`.

These two methods were each called from exactly one place, and did
very little beyond plumbing. It's clearer just to inline them directly
in their caller, `visitConditionalExpression`.

Change-Id: Ia10b69fc2f0817319ca93c0f12b1b148ac179f33
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/350682
Reviewed-by: Konstantin Shcheglov <scheglov@google.com>
Commit-Queue: Paul Berry <paulberry@google.com>
diff --git a/pkg/analyzer/lib/src/generated/static_type_analyzer.dart b/pkg/analyzer/lib/src/generated/static_type_analyzer.dart
index dba2f3f..5b671e8 100644
--- a/pkg/analyzer/lib/src/generated/static_type_analyzer.dart
+++ b/pkg/analyzer/lib/src/generated/static_type_analyzer.dart
@@ -102,7 +102,10 @@
   /// and the static type of <i>e<sub>3</sub></i>.</blockquote>
   void visitConditionalExpression(covariant ConditionalExpressionImpl node,
       {required DartType? contextType}) {
-    _analyzeLeastUpperBound(node, node.thenExpression, node.elseExpression,
+    DartType staticType = _typeSystem.leastUpperBound(
+        node.thenExpression.typeOrThrow, node.elseExpression.typeOrThrow);
+
+    _inferenceHelper.recordStaticType(node, staticType,
         contextType: contextType);
   }
 
@@ -294,29 +297,6 @@
         contextType: contextType);
   }
 
-  /// Set the static type of [node] to be the least upper bound of the static
-  /// types of subexpressions [expr1] and [expr2].
-  void _analyzeLeastUpperBound(
-      ExpressionImpl node, Expression expr1, Expression expr2,
-      {required DartType? contextType}) {
-    var staticType1 = expr1.typeOrThrow;
-    var staticType2 = expr2.typeOrThrow;
-
-    _analyzeLeastUpperBoundTypes(node, staticType1, staticType2,
-        contextType: contextType);
-  }
-
-  /// Set the static type of [node] to be the least upper bound of the static
-  /// types [staticType1] and [staticType2].
-  void _analyzeLeastUpperBoundTypes(
-      ExpressionImpl node, DartType staticType1, DartType staticType2,
-      {required DartType? contextType}) {
-    DartType staticType = _typeSystem.leastUpperBound(staticType1, staticType2);
-
-    _inferenceHelper.recordStaticType(node, staticType,
-        contextType: contextType);
-  }
-
   /// Return the type represented by the given type [annotation].
   DartType _getType(TypeAnnotation annotation) {
     var type = annotation.type;