Centralize all gbm ozone host IPC

ui/ozone/platform/drm/host/drm_overlay_candidates_host.cc

-// Copyright 2015 The Chromium Authors. All rights reserved.
+// Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/ozone/platform/drm/host/drm_overlay_candidates_host.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 
 #include "ui/gfx/geometry/rect_conversions.h"
 #include "ui/ozone/common/gpu/ozone_gpu_messages.h"
-#include "ui/ozone/platform/drm/host/drm_gpu_platform_support_host.h"
-#include "ui/ozone/platform/drm/host/drm_overlay_manager_core.h"
+#include "ui/ozone/platform/drm/host/drm_overlay_manager.h"
 #include "ui/ozone/platform/drm/host/drm_window_host.h"
 #include "ui/ozone/public/overlay_manager_ozone.h"
 
 namespace ui {
 
 DrmOverlayCandidatesHost::DrmOverlayCandidatesHost(
-    DrmOverlayManagerCore* manager_core,
+    DrmOverlayManager* manager,
     gfx::AcceleratedWidget widget)
-    : overlay_manager_(manager_core), widget_(widget) {}
+    : overlay_manager_(manager), widget_(widget) {}
 
-DrmOverlayCandidatesHost::~DrmOverlayCandidatesHost() {
-}
+DrmOverlayCandidatesHost::~DrmOverlayCandidatesHost() {}
 
 void DrmOverlayCandidatesHost::CheckOverlaySupport(
     OverlaySurfaceCandidateList* candidates) {
   overlay_manager_->CheckOverlaySupport(candidates, widget_);
 }
 
 
 }  // namespace ui