Launch nexes from mojo_shell.

shell/BUILD.gn

Index: shell/BUILD.gn
diff --git a/shell/BUILD.gn b/shell/BUILD.gn
index 3f4838a69c0d969768b0be77038b08bb4ece83f6..eef339b52c7cae676dde323c2105e61a1c7fef25 100644
--- a/shell/BUILD.gn
+++ b/shell/BUILD.gn
@@ -3,6 +3,7 @@
 # found in the LICENSE file.
 
 import("//build/config/ui.gni")
+import("//mojo/nacl/config.gni")
 import("//mojo/public/mojo.gni")
 import("//mojo/public/tools/bindings/mojom.gni")
 import("//testing/test.gni")
@@ -11,6 +12,14 @@ import("//testing/test.gni")
 # inherently components.
 assert(!is_component_build)
 
+config("gate_nacl") {

[jamesr, 2015/02/03 05:15:41]

it's not worth adding a new config that will be used in only one place. just set
the define directly

[Nick Bray (chromium), 2015/02/03 19:06:31]

Done.

+  if (mojo_use_nacl) {
+    defines = [ "MOJO_USE_NACL=1" ]
+  } else {
+    defines = [ "MOJO_USE_NACL=0" ]
+  }
+}
+
 group("shell") {
   testonly = true
 
@@ -191,6 +200,18 @@ source_set("lib") {
     "//url",
   ]
 
+  configs += [ ":gate_nacl" ]
+  if (mojo_use_nacl) {
+    sources += [

[jamesr, 2015/02/03 05:15:41]

as in defines += [ .. ] in here (and if you must have the =0 do it in the false
case, although if the #ifs are set up correctly you should not need to)

[Nick Bray (chromium), 2015/02/03 19:06:31]

Done, although I generally believe using -Wundef is the better choice.

+      "nacl/nacl_service_runner.cc",
+      "nacl/nacl_service_runner.h",
+    ]
+
+    deps += [ "//mojo/nacl:monacl_sel" ]
+
+    data_deps = [ "//mojo/nacl:irt_mojo(//native_client/build/toolchain/nacl:irt_${cpu_arch})" ]
+  }
+
   if (is_win) {
     deps -= [ "//shell/domain_socket" ]
   }