Allow Chrome to bind an Application request from mojo_runner.

mojo/runner/BUILD.gn

Index: mojo/runner/BUILD.gn
diff --git a/mojo/runner/BUILD.gn b/mojo/runner/BUILD.gn
index 6dd9642401a1c844eab46ae42627984e3551b4ed..1ac047b0e7537352d2e11b8a33d262eee9ccf165 100644
--- a/mojo/runner/BUILD.gn
+++ b/mojo/runner/BUILD.gn
@@ -7,10 +7,6 @@ import("//mojo/public/mojo_application.gni")
 import("//testing/test.gni")
 import("//third_party/mojo/src/mojo/public/tools/bindings/mojom.gni")
 
-# We don't support building in the component build since mojo apps are
-# inherently components.
-assert(!is_component_build)
-
 group("runner") {
   testonly = true