A few more strong-mode fixes (#1463)

lib/src/barback.dart

@@ -35,10 +35,10 @@ import 'package:pub_semver/pub_semver.dart';
 ///
 /// [compat]: https://gist.github.com/nex3/10942218
 final pubConstraints = {
-  "barback": new VersionConstraint.parse(">=0.15.0 <0.15.3"),
-  "source_span": new VersionConstraint.parse(">=1.0.0 <2.0.0"),
-  "stack_trace": new VersionConstraint.parse(">=0.9.1 <2.0.0"),
-  "async": new VersionConstraint.parse(">=1.8.0 <2.0.0")
+  "barback": new VersionConstraint.parse(">=0.15.0 <0.15.3") as VersionRange,
+  "source_span": new VersionConstraint.parse(">=1.0.0 <2.0.0") as VersionRange,
+  "stack_trace": new VersionConstraint.parse(">=0.9.1 <2.0.0") as VersionRange,
+  "async": new VersionConstraint.parse(">=1.8.0 <2.0.0") as VersionRange
 };
 
 /// Converts [id] to a "package:" URI.

test/barback/utils.dart

@@ -29,8 +29,8 @@ void pubBuildAndServeShouldFail(String description, {List<String> args,
   }
 
   // Usage errors also print the usage, so validate that.
-  var buildExpectation = buildError;
-  var serveExpectation = serveError;
+  Object buildExpectation = buildError;
+  Object serveExpectation = serveError;
   if (exitCode == exit_codes.USAGE) {
     buildExpectation = allOf(
         startsWith(buildExpectation), contains("Usage: pub build"));

test/pub_uploader_test.dart

@@ -31,7 +31,7 @@ See http://dartlang.org/tools/pub/cmd/pub-uploader.html for detailed documentati
 ScheduledProcess startPubUploader(ScheduledServer server, List<String> args) {
   var tokenEndpoint = server.url.then((url) =>
       url.resolve('/token').toString());
-  args = ['uploader', '--server', tokenEndpoint]..addAll(args);
+  args = <Object>['uploader', '--server', tokenEndpoint]..addAll(args);
   return startPub(args: args, tokenEndpoint: tokenEndpoint);
 }
 

test/validator/size_test.dart

@@ -12,7 +12,7 @@ import '../descriptor.dart' as d;
 import '../test_pub.dart';
 import 'utils.dart';
 
-Function size(int size) {
+ValidatorCreator size(int size) {
   return (entrypoint) =>
       new SizeValidator(entrypoint, new Future.value(size));
 }