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

mojo/edk/embedder/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")
+
 source_set("headers") {
   sources = [
     "configuration.h",
     "embedder.h",
     "embedder_internal.h",
     "named_platform_channel_pair.h",
     "platform_channel_pair.h",
     "platform_handle.h",
     "platform_handle_utils.h",
     "process_delegate.h",
@@ skipping 37 matching lines @@
   configs += [ "//mojo/edk/system:system_config" ]
 
   public_deps = [
     ":delegates",
     ":headers",
     ":platform",
     "//base",
     "//mojo/public/cpp/system",
   ]
 
-  deps = [
-    "//crypto",
-  ]
+  if (!is_nacl) {
+    deps = [
+      "//crypto",
+    ]
+  }
 }
 
 source_set("platform") {
   # This isn't really a standalone target; it must be linked into the
   # mojo_system_impl component.
   visibility = [
     ":embedder",
     "//mojo/edk/system",
   ]
 
@@ skipping 25 matching lines @@
     "//mojo/public/cpp/system",
   ]
 
   deps = [
     "//base",
   ]
 
   if (is_android) {
     deps += [ "//third_party/ashmem" ]
   }
+
+  if (is_nacl && !is_nacl_nonsfi) {
+    sources -= [ "platform_channel_utils_posix.cc" ]
+  }
 }
 
 source_set("delegates") {
   # This isn't really a standalone target; it must be linked into the
   # mojo_system_impl component.
   visibility = [
     ":embedder",
     "//mojo/edk/system",
   ]
 
@@ skipping 24 matching lines @@
 
   deps = [
     "//base",
     "//base/test:test_support",
     "//mojo/edk/system",
     "//mojo/edk/system:test_utils",
     "//mojo/edk/test:test_support",
     "//testing/gtest",
   ]
 }