Support impl-side painting in Mandoline.

mandoline/ui/aura/surface_context_factory.h

Index: mandoline/ui/aura/surface_context_factory.h
diff --git a/mandoline/ui/aura/surface_context_factory.h b/mandoline/ui/aura/surface_context_factory.h
index abf8d9b040a4c96456754d68cfc25336bb5e580b..90b99343a2e6d83eb2e10be51309603e0b0831d1 100644
--- a/mandoline/ui/aura/surface_context_factory.h
+++ b/mandoline/ui/aura/surface_context_factory.h
@@ -5,6 +5,8 @@
 #ifndef MANDOLINE_UI_AURA_SURFACE_CONTEXT_FACTORY_H_
 #define MANDOLINE_UI_AURA_SURFACE_CONTEXT_FACTORY_H_
 
+#include "components/view_manager/gles2/mojo_gpu_memory_buffer_manager.h"
+#include "components/view_manager/gles2/raster_thread_helper.h"
 #include "mandoline/ui/aura/surface_binding.h"
 #include "ui/compositor/compositor.h"
 
@@ -41,6 +43,8 @@ class SurfaceContextFactory : public ui::ContextFactory {
 
   SurfaceBinding surface_binding_;
   uint32_t next_surface_id_namespace_;
+  gles2::RasterThreadHelper raster_thread_helper_;
+  gles2::MojoGpuMemoryBufferManager gpu_memory_buffer_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(SurfaceContextFactory);
 };