Enable gpu rasterization in the vr shell

skia/BUILD.gn

Index: skia/BUILD.gn
diff --git a/skia/BUILD.gn b/skia/BUILD.gn
index 853e365e9a95c9dd051bf57bdb6a29f0b5ec7109..90db4614b88a3ddb92f0bc9686f3566b3e1df5ee 100644
--- a/skia/BUILD.gn
+++ b/skia/BUILD.gn
@@ -5,6 +5,7 @@
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//build/config/sanitizers/sanitizers.gni")
+import("//device/vr/features/features.gni")
 import("//printing/features/features.gni")
 import("//testing/test.gni")
 import("//third_party/skia/gn/shared_sources.gni")
@@ -430,6 +431,21 @@ component("skia") {
     deps += [ "//build/config/freetype" ]
   }
 
+  if (is_android && enable_vr) {
+    sources -= [
+      "//third_party/skia/src/gpu/gl/GrGLCreateNativeInterface_none.cpp",
+      "//third_party/skia/src/gpu/gl/GrGLDefaultInterface_none.cpp",
+    ]
+    sources += [
+      "//third_party/skia/src/gpu/gl/GrGLDefaultInterface_native.cpp",
+      "//third_party/skia/src/gpu/gl/android/GrGLCreateNativeInterface_android.cpp",
+    ]
+    libs = [
+      "EGL",
+      "GLESv2",
+    ]
+  }
+
   if (skia_support_pdf) {
     deps += [
       "//third_party/sfntly",