net: make pinning enforcement timeout after ten weeks.

net/base/build_time_unittest.cc

Index: net/base/build_time_unittest.cc
diff --git a/net/base/build_time_unittest.cc b/net/base/build_time_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..08443f2345725a993cf010009a123ba0d7eb9695
--- /dev/null
+++ b/net/base/build_time_unittest.cc
@@ -0,0 +1,20 @@
+// Copyright (c) 2011 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/base/build_time.h"
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+TEST(BuildTime, DateFormat) {
+  char build_date[] = __DATE__;
+
+  EXPECT_EQ(11u, strlen(build_date));
+  EXPECT_EQ(' ', build_date[3]);
+  EXPECT_EQ(' ', build_date[6]);
+
+  // Since __DATE__ isn't updated unless one does a clobber build, we can't
+  // really test the value returned by it, except to check that it doesn't
+  // crash.
+  net::GetDaysSinceBuild();
+}