Bug 1392556 - Initialize DWriteFactory in GPUParent::RecvInit() r=jrmuizel

gfx/ipc/GPUParent.cpp

@@ -42,6 +42,7 @@
 #if defined(XP_WIN)
 # include "mozilla/gfx/DeviceManagerDx.h"
 # include <process.h>
+# include <dwrite.h>
 #endif
 #ifdef MOZ_WIDGET_GTK
 # include <gtk/gtk.h>
@@ -182,6 +183,9 @@ GPUParent::RecvInit(nsTArray<GfxPrefSetting>&& prefs,
   if (gfxConfig::IsEnabled(Feature::D3D11_COMPOSITING)) {
     DeviceManagerDx::Get()->CreateCompositorDevices();
   }
+  if (gfxVars::UseWebRender()) {
+    Factory::EnsureDWriteFactory();
+  }
 #endif
 
 #if defined(MOZ_WIDGET_GTK)