ozone: Fix egltest platform

ui/ozone/platform/egltest/ozone_platform_egltest.cc

Index: ui/ozone/platform/egltest/ozone_platform_egltest.cc
diff --git a/ui/ozone/platform/egltest/ozone_platform_egltest.cc b/ui/ozone/platform/egltest/ozone_platform_egltest.cc
index d75c786da9908193bbe9a064d317b99c5fc1e4a3..54d1637f54357aa7c062857eff434b7e350a67e0 100644
--- a/ui/ozone/platform/egltest/ozone_platform_egltest.cc
+++ b/ui/ozone/platform/egltest/ozone_platform_egltest.cc
@@ -265,7 +265,9 @@ class OzonePlatformEgltest : public OzonePlatform {
     cursor_factory_ozone_.reset(new CursorFactoryOzone());
   }
 
-  virtual void InitializeGPU() OVERRIDE {}
+  virtual void InitializeGPU() OVERRIDE {
+    surface_factory_ozone_.reset(new SurfaceFactoryEgltest(&eglplatform_shim_));
+  }
 
  private:
   LibeglplatformShimLoader eglplatform_shim_;