Switch DRM platform to using a separate thread

ui/ozone/platform/drm/gpu/drm_surface.cc

Index: ui/ozone/platform/drm/gpu/drm_surface.cc
diff --git a/ui/ozone/platform/drm/gpu/drm_surface.cc b/ui/ozone/platform/drm/gpu/drm_surface.cc
index f3780ff1ffe3a35cca39e33f0004d6a11f04aae9..f3b8ad3f0801d0ef97c8d8baada9980a8c0611d4 100644
--- a/ui/ozone/platform/drm/gpu/drm_surface.cc
+++ b/ui/ozone/platform/drm/gpu/drm_surface.cc
@@ -4,7 +4,7 @@
 
 #include "ui/ozone/platform/drm/gpu/drm_surface.h"
 
-#include "base/bind_helpers.h"
+#include "base/bind.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "third_party/skia/include/core/SkCanvas.h"
@@ -14,7 +14,7 @@
 #include "ui/ozone/platform/drm/gpu/drm_buffer.h"
 #include "ui/ozone/platform/drm/gpu/drm_device.h"
 #include "ui/ozone/platform/drm/gpu/drm_vsync_provider.h"
-#include "ui/ozone/platform/drm/gpu/drm_window.h"
+#include "ui/ozone/platform/drm/gpu/drm_window_proxy.h"
 #include "ui/ozone/platform/drm/gpu/hardware_display_controller.h"
 
 namespace ui {
@@ -35,9 +35,8 @@ scoped_refptr<DrmBuffer> AllocateBuffer(const scoped_refptr<DrmDevice>& drm,
 
 }  // namespace
 
-DrmSurface::DrmSurface(DrmWindow* window)
-    : window_(window), weak_ptr_factory_(this) {
-}
+DrmSurface::DrmSurface(scoped_ptr<DrmWindowProxy> window)
+    : window_(window.Pass()), weak_ptr_factory_(this) {}
 
 DrmSurface::~DrmSurface() {
 }
@@ -51,16 +50,14 @@ void DrmSurface::ResizeCanvas(const gfx::Size& viewport_size) {
       viewport_size.width(), viewport_size.height(), kOpaque_SkAlphaType);
   surface_ = skia::AdoptRef(SkSurface::NewRaster(info));
 
-  HardwareDisplayController* controller = window_->GetController();
-  if (!controller)
+  scoped_refptr<DrmDevice> drm = window_->GetDrmDevice();
+  if (!drm)
     return;
 
   // For the display buffers use the mode size since a |viewport_size| smaller
   // than the display size will not scanout.
-  front_buffer_ = AllocateBuffer(controller->GetAllocationDrmDevice(),
-                                 controller->GetModeSize());
-  back_buffer_ = AllocateBuffer(controller->GetAllocationDrmDevice(),
-                                controller->GetModeSize());
+  front_buffer_ = AllocateBuffer(drm, window_->GetBounds().size());
+  back_buffer_ = AllocateBuffer(drm, window_->GetBounds().size());
 }
 
 void DrmSurface::PresentCanvas(const gfx::Rect& damage) {
@@ -76,7 +73,7 @@ void DrmSurface::PresentCanvas(const gfx::Rect& damage) {
 }
 
 scoped_ptr<gfx::VSyncProvider> DrmSurface::CreateVSyncProvider() {
-  return make_scoped_ptr(new DrmVSyncProvider(window_));
+  return make_scoped_ptr(new DrmVSyncProvider(window_.get()));
 }
 
 void DrmSurface::SchedulePageFlip() {