Disable DownloaderTestSuite on Windows.

#2138 tracks reenabling.

--
MOS_MIGRATED_REVID=140194911
diff --git a/src/test/java/com/google/devtools/build/lib/bazel/repository/downloader/BUILD b/src/test/java/com/google/devtools/build/lib/bazel/repository/downloader/BUILD
index feec6e1..6d9253a 100644
--- a/src/test/java/com/google/devtools/build/lib/bazel/repository/downloader/BUILD
+++ b/src/test/java/com/google/devtools/build/lib/bazel/repository/downloader/BUILD
@@ -6,9 +6,11 @@
 
 java_test(
     name = "DownloaderTestSuite",
-    size = "large",  # times out on Windows otherwise
     srcs = glob(["*.java"]),
-    tags = ["rules"],
+    tags = [
+        "no_windows",
+        "rules",
+    ],
     deps = [
         "//src/main/java/com/google/devtools/build/lib:events",
         "//src/main/java/com/google/devtools/build/lib/bazel/repository/downloader",