ozone: Add overlay candidate implementation that queries support via IPC

ui/ozone/platform/drm/ozone_platform_drm.cc

 // Copyright 2013 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/ozone_platform_drm.h"
 
 #include "base/at_exit.h"
 #include "base/thread_task_runner_handle.h"
 #include "ui/base/cursor/ozone/bitmap_cursor_factory_ozone.h"
 #include "ui/events/ozone/device/device_manager.h"
@@ skipping 77 matching lines @@
   }
   scoped_ptr<NativeDisplayDelegate> CreateNativeDisplayDelegate() override {
     return make_scoped_ptr(
         new DrmNativeDisplayDelegate(display_manager_.get()));
   }
   void InitializeUI() override {
     drm_device_manager_.reset(new DrmDeviceManager(
         scoped_ptr<DrmDeviceGenerator>(new DrmDeviceGenerator())));
     window_manager_.reset(new DrmWindowHostManager());
     cursor_.reset(new DrmCursor(window_manager_.get()));
-    overlay_manager_.reset(new DrmOverlayManager(false));
+    overlay_manager_.reset(new DrmOverlayManager(false, nullptr));
     surface_factory_ozone_.reset(new DrmSurfaceFactory(screen_manager_.get()));
     scoped_ptr<DrmGpuDisplayManager> ndd(new DrmGpuDisplayManager(
         screen_manager_.get(), drm_device_manager_.get()));
     gpu_platform_support_.reset(new DrmGpuPlatformSupport(
-        drm_device_manager_.get(), screen_manager_.get(), ndd.Pass()));
+        drm_device_manager_.get(), screen_manager_.get(),
+        buffer_generator_.get(), ndd.Pass()));
     gpu_platform_support_host_.reset(
         new DrmGpuPlatformSupportHost(cursor_.get()));
     display_manager_.reset(new DrmDisplayHostManager(
         gpu_platform_support_host_.get(), device_manager_.get()));
     cursor_factory_ozone_.reset(new BitmapCursorFactoryOzone);
 #if defined(USE_XKBCOMMON)
     KeyboardLayoutEngineManager::SetKeyboardLayoutEngine(make_scoped_ptr(
         new XkbKeyboardLayoutEngine(xkb_evdev_code_converter_)));
 #else
     KeyboardLayoutEngineManager::SetKeyboardLayoutEngine(
@@ skipping 43 matching lines @@
 
 OzonePlatform* CreateOzonePlatformDri() {
   return new OzonePlatformDrm;
 }
 
 OzonePlatform* CreateOzonePlatformDrm() {
   return new OzonePlatformDrm;
 }
 
 }  // namespace ui