Support building BoringSSL with NSS certificates.

chrome/utility/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 
 gypi_values = exec_script("//build/gypi_to_gn.py",
                           [ rebase_path("../chrome_utility.gypi") ],
                           "scope",
@@ skipping 54 matching lines @@
                       "..")
     }
 
     # Linux should use system libexif
     if (!is_linux) {
       # TODO(thestig): Properly support building on Linux and ChromeOS.
       deps += [ "//third_party/libexif" ]
     }
   }
 
-  if (use_openssl) {
-    if (!is_win && !is_mac && !is_android) {
-      sources -= [ "importer/nss_decryptor.cc" ]
-    }
-  } else {  # !use_openssl
-    if (!is_win && !is_mac) {
-      sources += [
-        "importer/nss_decryptor_system_nss.cc",
-        "importer/nss_decryptor_system_nss.h",
-      ]
-      deps += [
-        "//crypto",
-        "//crypto:platform",
-      ]
-    }
+  if (use_nss_certs) {
+    sources += [
+      "importer/nss_decryptor_system_nss.cc",
+      "importer/nss_decryptor_system_nss.h",
+    ]
+    deps += [
+      "//crypto",
+      "//crypto:platform",
+    ]
   }
 
   if (!enable_print_preview) {
     sources -= [
       "printing_handler.cc",
       "printing_handler.h",
     ]
   }
 
   if (!enable_mdns) {
     sources -= [
       "local_discovery/service_discovery_message_handler.cc",
       "local_discovery/service_discovery_message_handler.h",
     ]
   }
 
   if (safe_browsing_mode == 1) {
     defines += [ "FULL_SAFE_BROWSING" ]
   }
 }