dart2js cps: Inline constructor bodies that are only called once.

tests/compiler/dart2js/cps_ir/expected/constructor_9.js

Index: tests/compiler/dart2js/cps_ir/expected/constructor_9.js
diff --git a/tests/compiler/dart2js/cps_ir/expected/constructor_9.js b/tests/compiler/dart2js/cps_ir/expected/constructor_9.js
index 05928b34cb99f85a308a0b89ba2e3867f8d7162c..6240573ef89c7a887f731644f3124ffc5a54d8b3 100644
--- a/tests/compiler/dart2js/cps_ir/expected/constructor_9.js
+++ b/tests/compiler/dart2js/cps_ir/expected/constructor_9.js
@@ -9,7 +9,15 @@
 // }
 
 function($T) {
-  var v0 = H.setRuntimeTypeInfo(new V.C(), [$T]);
-  v0.C$0();
-  return v0;
+  var line = H.S(H.createRuntimeType(H.runtimeTypeToString($T)));
+  if (typeof dartPrint == "function")
+    dartPrint(line);
+  else if (typeof console == "object" && typeof console.log != "undefined")
+    console.log(line);
+  else if (!(typeof window == "object")) {
+    if (!(typeof print == "function"))
+      throw "Unable to print message: " + String(line);
+    print(line);
+  }
+  return H.setRuntimeTypeInfo(new V.C(), [$T]);
 }