Move vr features.gni into its own directory.

device/vr/BUILD.gn

Index: device/vr/BUILD.gn
diff --git a/device/vr/BUILD.gn b/device/vr/BUILD.gn
index 66f5c096d16a34e62c0e2609eb64a7c63229cba3..a1ed8c43d9aaf91cfe5bf21505f731bb7314328f 100644
--- a/device/vr/BUILD.gn
+++ b/device/vr/BUILD.gn
@@ -2,23 +2,13 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-import("features.gni")
-import("//build/buildflag_header.gni")
+import("features/features.gni")
 import("//mojo/public/tools/bindings/mojom.gni")
 
 if (is_android) {
   import("//build/config/android/rules.gni")  # For generate_jni().
 }
 
-# Generate a buildflag header for compile-time checking of WebVR support.
-buildflag_header("features") {
-  header = "features.h"
-  flags = [
-    "ENABLE_VR=$enable_vr",
-    "ENABLE_OPENVR=$enable_openvr",
-  ]
-}
-
 component("vr") {
   output_name = "device_vr"
 
@@ -27,11 +17,9 @@ component("vr") {
   ]
   defines = [ "DEVICE_VR_IMPLEMENTATION" ]
   deps = [
-    ":features",
+    ":mojo_bindings",
+    "features",
   ]
-  if (!is_ios) {
-    deps += [ ":mojo_bindings" ]
-  }
 
   if (!enable_vr) {
     sources += [
@@ -128,19 +116,17 @@ if (enable_vr) {
   }
 }
 
-if (!is_ios) {
-  mojom("mojo_bindings") {
-    sources = [
-      "vr_service.mojom",
-    ]
+mojom("mojo_bindings") {
+  sources = [
+    "vr_service.mojom",
+  ]
 
-    public_deps = [
-      "//gpu/ipc/common:interfaces",
-      "//mojo/common:common_custom_types",
-    ]
+  public_deps = [
+    "//gpu/ipc/common:interfaces",
+    "//mojo/common:common_custom_types",
+  ]
 
-    export_class_attribute = "DEVICE_VR_EXPORT"
-    export_define = "DEVICE_VR_IMPLEMENTATION=1"
-    export_header = "device/vr/vr_export.h"
-  }
+  export_class_attribute = "DEVICE_VR_EXPORT"
+  export_define = "DEVICE_VR_IMPLEMENTATION=1"
+  export_header = "device/vr/vr_export.h"
 }