Update from https://crrev.com/327068

base/third_party/nspr/BUILD.gn

Index: base/third_party/nspr/BUILD.gn
diff --git a/base/third_party/nspr/BUILD.gn b/base/third_party/nspr/BUILD.gn
deleted file mode 100644
index 034f37b275ce1c3ab67b66b5d0705ed57b04f655..0000000000000000000000000000000000000000
--- a/base/third_party/nspr/BUILD.gn
+++ /dev/null
@@ -1,21 +0,0 @@
-# Copyright (c) 2013 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.
-
-source_set("nspr") {
-  visibility = [ "//base/*" ]
-
-  sources = [
-    "prtime.cc",
-    "prtime.h",
-  ]
-
-  # In GYP this project is part of base, so it uses the base implementation
-  # define. TODO(brettw) rename this define.
-  configs += [ "//base:base_implementation" ]
-
-  if (is_android && !is_debug) {
-    configs -= [ "//build/config/compiler:optimize" ]
-    configs += [ "//build/config/compiler:optimize_max" ]
-  }
-}