[mojo-edk] Make the Mojo EDK compile under NaCl.

mojo/edk/system/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/nacl/config.gni")
 import("//testing/test.gni")
 import("../../../mojo/public/tools/bindings/mojom.gni")
 
 if (is_android) {
   import("//build/config/android/config.gni")
   import("//build/config/android/rules.gni")
 }
 
 config("system_config") {
   defines = [
@@ skipping 78 matching lines @@
     "//mojo/edk/embedder:delegates",
     "//mojo/edk/embedder:platform",
     "//mojo/edk/system/ports",
     "//mojo/public/c/system",
     "//mojo/public/cpp/system",
   ]
 
   deps = [
     "//base",
     "//base/third_party/dynamic_annotations",
-    "//crypto",
   ]
 
+  if (!is_nacl) {
+    deps += [ "//crypto" ]
+  }
+
   if (is_win) {
     cflags = [ "/wd4324" ]  # Structure was padded due to __declspec(align()),
                             # which is uninteresting.
   }
 
   if (is_mac && !is_ios) {
     sources += [
       "mach_port_relay.cc",
       "mach_port_relay.h",
     ]
   }
 
+  if (is_nacl && !is_nacl_nonsfi) {
+    sources -= [
+      "broker_host_posix.cc",
+      "broker_posix.cc",
+      "channel_posix.cc",
+    ]
+  }
+
   allow_circular_includes_from = [ "//mojo/edk/embedder" ]
 }
 
 group("tests") {
   testonly = true
   deps = [
     ":mojo_system_unittests",
   ]
 
   if (!is_ios) {
@@ skipping 73 matching lines @@
       ":test_utils",
       "//base",
       "//base/test:test_support",
       "//mojo/edk/system",
       "//mojo/edk/test:run_all_perftests",
       "//mojo/edk/test:test_support",
       "//testing/gtest",
     ]
   }
 }