cpsir unittests: move all unittests into individual files and test runners.

tests/compiler/dart2js/cps_ir/expected/constructor_7.js

Index: tests/compiler/dart2js/cps_ir/expected/constructor_7.js
diff --git a/tests/compiler/dart2js/cps_ir/expected/constructor_7.js b/tests/compiler/dart2js/cps_ir/expected/constructor_7.js
new file mode 100644
index 0000000000000000000000000000000000000000..8474ee47649f58b785897db9cfc5d58305928c1f
--- /dev/null
+++ b/tests/compiler/dart2js/cps_ir/expected/constructor_7.js
@@ -0,0 +1,20 @@
+// Expectation for test: 
+// class C<T> {
+//   foo() => T;
+// }
+// main() {
+//   print(new C<int>().foo());
+// }
+
+function() {
+  var line = H.S(H.createRuntimeType(H.runtimeTypeToString(H.getTypeArgumentByIndex(V.C$(P.$int), 0))));
+  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);
+  }
+}