Switch DRM platform to using a separate thread

ui/ozone/platform/drm/gpu/drm_surface_factory.h

Index: ui/ozone/platform/drm/gpu/drm_surface_factory.h
diff --git a/ui/ozone/platform/drm/gpu/drm_surface_factory.h b/ui/ozone/platform/drm/gpu/drm_surface_factory.h
index 223a7b9dc28cf5f99bc9a73b3198d75b8407ed87..5b44269d07798db549137daf70c7cbf0bb1ed48f 100644
--- a/ui/ozone/platform/drm/gpu/drm_surface_factory.h
+++ b/ui/ozone/platform/drm/gpu/drm_surface_factory.h
@@ -6,20 +6,22 @@
 #define UI_OZONE_PLATFORM_DRM_GPU_DRM_SURFACE_FACTORY_H_
 
 #include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
 #include "base/threading/thread_checker.h"
 #include "ui/ozone/public/surface_factory_ozone.h"
 
 namespace ui {
 
-class ScreenManager;
+class DrmThread;
 class SurfaceOzoneCanvas;
 
 // SurfaceFactoryOzone implementation on top of DRM/KMS using dumb buffers.
 // This implementation is used in conjunction with the software rendering
 // path.
-class DrmSurfaceFactory : public SurfaceFactoryOzone {
+class DrmSurfaceFactory : public SurfaceFactoryOzone,
+                          public base::SupportsWeakPtr<DrmSurfaceFactory> {

[spang, 2015/09/14 18:41:43]

use WeakPtrFactory instead

[dnicoara, 2015/09/17 21:58:21]

No longer relevant.

  public:
-  DrmSurfaceFactory(ScreenManager* screen_manager);
+  DrmSurfaceFactory(DrmThread* drm_thread);
   ~DrmSurfaceFactory() override;
 
   // SurfaceFactoryOzone:
@@ -30,7 +32,7 @@ class DrmSurfaceFactory : public SurfaceFactoryOzone {
       SetGLGetProcAddressProcCallback set_gl_get_proc_address) override;
 
  protected:
-  ScreenManager* screen_manager_;  // Not owned.
+  DrmThread* drm_thread_;  // Not owned.
   base::ThreadChecker thread_checker_;
 
   DISALLOW_COPY_AND_ASSIGN(DrmSurfaceFactory);