Expose API to detect when captive portal probe was blocked on Android

net/android/network_library_unittest.cc

Index: net/android/network_library_unittest.cc
diff --git a/net/android/network_library_unittest.cc b/net/android/network_library_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..b6cb8753ebc24c4838537e001ed7abec79e622be
--- /dev/null
+++ b/net/android/network_library_unittest.cc
@@ -0,0 +1,19 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "net/android/network_library.h"
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace net {
+
+namespace android {
+
+TEST(NetworkLibraryTest, CaptivePortal) {
+  EXPECT_FALSE(android::GetIsCaptivePortal());
+}
+
+}  // namespace android
+
+}  // namespace net