Only set types of conditional expressions in strong mode.

pkg/front_end/testcases/inference/infer_assign_to_static.dart.direct.expect

 library test;
 import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
   constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends self::A {
@@ skipping 13 matching lines @@
 class C extends self::B {
   constructor •() → void
     : super self::B::•()
     ;
 }
 static field self::B topLevelVariable;
 static method f<T extends core::Object>() → self::f::T
   return null;
 static method test_topLevelVariable() → void {
   self::topLevelVariable = self::f<dynamic>();
-  self::topLevelVariable.==(null) ?{dynamic} self::topLevelVariable = self::f<dynamic>() : null;
+  self::topLevelVariable.==(null) ? self::topLevelVariable = self::f<dynamic>() : null;
   self::topLevelVariable = self::topLevelVariable.+(self::f<dynamic>());
   self::topLevelVariable = self::topLevelVariable.*(self::f<dynamic>());
   self::topLevelVariable = self::topLevelVariable.&(self::f<dynamic>());
   self::topLevelVariable = self::topLevelVariable.-(1);
   self::topLevelVariable = self::topLevelVariable.-(1);
   dynamic v1 = self::topLevelVariable = self::f<dynamic>();
-  dynamic v2 = let final dynamic #t1 = self::topLevelVariable in #t1.==(null) ?{dynamic} self::topLevelVariable = self::f<dynamic>() : #t1;
+  dynamic v2 = let final dynamic #t1 = self::topLevelVariable in #t1.==(null) ? self::topLevelVariable = self::f<dynamic>() : #t1;
   dynamic v3 = self::topLevelVariable = self::topLevelVariable.+(self::f<dynamic>());
   dynamic v4 = self::topLevelVariable = self::topLevelVariable.*(self::f<dynamic>());
   dynamic v5 = self::topLevelVariable = self::topLevelVariable.&(self::f<dynamic>());
   dynamic v6 = self::topLevelVariable = self::topLevelVariable.-(1);
   dynamic v7 = let final dynamic #t2 = self::topLevelVariable in let final dynamic #t3 = self::topLevelVariable = #t2.-(1) in #t2;
 }
 static method test_staticVariable() → void {
   self::B::staticVariable = self::f<dynamic>();
-  self::B::staticVariable.==(null) ?{dynamic} self::B::staticVariable = self::f<dynamic>() : null;
+  self::B::staticVariable.==(null) ? self::B::staticVariable = self::f<dynamic>() : null;
   self::B::staticVariable = self::B::staticVariable.+(self::f<dynamic>());
   self::B::staticVariable = self::B::staticVariable.*(self::f<dynamic>());
   self::B::staticVariable = self::B::staticVariable.&(self::f<dynamic>());
   self::B::staticVariable = self::B::staticVariable.-(1);
   self::B::staticVariable = self::B::staticVariable.-(1);
   dynamic v1 = self::B::staticVariable = self::f<dynamic>();
-  dynamic v2 = let final dynamic #t4 = self::B::staticVariable in #t4.==(null) ?{dynamic} self::B::staticVariable = self::f<dynamic>() : #t4;
+  dynamic v2 = let final dynamic #t4 = self::B::staticVariable in #t4.==(null) ? self::B::staticVariable = self::f<dynamic>() : #t4;
   dynamic v3 = self::B::staticVariable = self::B::staticVariable.+(self::f<dynamic>());
   dynamic v4 = self::B::staticVariable = self::B::staticVariable.*(self::f<dynamic>());
   dynamic v5 = self::B::staticVariable = self::B::staticVariable.&(self::f<dynamic>());
   dynamic v6 = self::B::staticVariable = self::B::staticVariable.-(1);
   dynamic v7 = let final dynamic #t5 = self::B::staticVariable in let final dynamic #t6 = self::B::staticVariable = #t5.-(1) in #t5;
 }
 static method main() → dynamic {}