SurfaceFactoryOzone: expose scanout supported GpuMemoryBufferAttribs

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

Index: ui/ozone/platform/drm/gpu/drm_gpu_display_manager.cc
diff --git a/ui/ozone/platform/drm/gpu/drm_gpu_display_manager.cc b/ui/ozone/platform/drm/gpu/drm_gpu_display_manager.cc
index 100c7a405ecd97318359373e24ee1c4173cf6ba6..53fb4c180593e4bdd3d450b9af963ad0ddad1850 100644
--- a/ui/ozone/platform/drm/gpu/drm_gpu_display_manager.cc
+++ b/ui/ozone/platform/drm/gpu/drm_gpu_display_manager.cc
@@ -108,6 +108,37 @@ void DrmGpuDisplayManager::GetScanoutFormats(
     scanout_formats->push_back(GetBufferFormatFromFourCCFormat(fourcc));
 }
 
+void DrmGpuDisplayManager::GetScanoutFormatsWithModifiers(
+    gfx::AcceleratedWidget widget,
+    gfx::GpuMemoryBufferAttribVector* scanout_combinations) {
+  HardwareDisplayPlaneManager* plane_manager =
+      drm_device_manager_->GetDrmDevice(widget)
+          ->plane_manager();
+  const std::vector<uint32_t>& fourcc_formats =
+      plane_manager->GetSupportedFormats();
+
+  for (auto& format : fourcc_formats) {
+    const std::vector<std::unique_ptr<HardwareDisplayPlane>>& planes =
+        plane_manager->planes();
+    for (auto& plane : planes) {
+      if (plane->type() != HardwareDisplayPlane::kPrimary)
+        continue;
+
+      const std::vector<uint64_t>& drm_modifiers =
+          plane->ModifiersForFormat(format);
+      if (drm_modifiers.size() > 0) {
+        for (auto modifier : drm_modifiers) {
+          scanout_combinations->push_back(gfx::GpuMemoryBufferAttrib(
+              GetBufferFormatFromFourCCFormat(format), modifier));
+        }
+      } else
+        scanout_combinations->push_back(gfx::GpuMemoryBufferAttrib(
+            GetBufferFormatFromFourCCFormat(format), 0 /* MOD_NONE */));
+      break;
+    }
+  }
+}
+
 bool DrmGpuDisplayManager::TakeDisplayControl() {
   const DrmDeviceVector& devices = drm_device_manager_->GetDrmDevices();
   bool status = true;