Add GpuMemoryBuffer support for DXGI handles.

ui/gfx/mojo/buffer_types_struct_traits.h

Index: ui/gfx/mojo/buffer_types_struct_traits.h
diff --git a/ui/gfx/mojo/buffer_types_struct_traits.h b/ui/gfx/mojo/buffer_types_struct_traits.h
index 0fdf909f5fc37c3fc071bb1f81779a79d3de37ed..f76e9849409fa1d930a8004a7c353087212f911c 100644
--- a/ui/gfx/mojo/buffer_types_struct_traits.h
+++ b/ui/gfx/mojo/buffer_types_struct_traits.h
@@ -5,6 +5,7 @@
 #ifndef UI_GFX_MOJO_BUFFER_TYPES_STRUCT_TRAITS_H_
 #define UI_GFX_MOJO_BUFFER_TYPES_STRUCT_TRAITS_H_
 
+#include "build/build_config.h"
 #include "ui/gfx/buffer_types.h"
 #include "ui/gfx/mojo/buffer_types.mojom.h"
 
@@ -173,6 +174,8 @@ struct EnumTraits<gfx::mojom::GpuMemoryBufferType, gfx::GpuMemoryBufferType> {
         return gfx::mojom::GpuMemoryBufferType::IO_SURFACE_BUFFER;
       case gfx::GpuMemoryBufferType::NATIVE_PIXMAP:
         return gfx::mojom::GpuMemoryBufferType::NATIVE_PIXMAP;
+      case gfx::GpuMemoryBufferType::DXGI_HANDLE:
+        return gfx::mojom::GpuMemoryBufferType::DXGI_HANDLE;
     }
     NOTREACHED();
     return gfx::mojom::GpuMemoryBufferType::LAST;
@@ -193,6 +196,9 @@ struct EnumTraits<gfx::mojom::GpuMemoryBufferType, gfx::GpuMemoryBufferType> {
       case gfx::mojom::GpuMemoryBufferType::NATIVE_PIXMAP:
         *out = gfx::GpuMemoryBufferType::NATIVE_PIXMAP;
         return true;
+      case gfx::mojom::GpuMemoryBufferType::DXGI_HANDLE:
+        *out = gfx::GpuMemoryBufferType::DXGI_HANDLE;
+        return true;
     }
     return false;
   }
@@ -276,6 +282,8 @@ struct StructTraits<gfx::mojom::GpuMemoryBufferHandleDataView,
   }
   static mojo::ScopedSharedBufferHandle shared_memory_handle(
       const gfx::GpuMemoryBufferHandle& handle);
+  static mojo::ScopedHandle win32_handle(
+      const gfx::GpuMemoryBufferHandle& handle);
   static uint32_t offset(const gfx::GpuMemoryBufferHandle& handle) {
     return handle.offset;
   }
@@ -285,6 +293,13 @@ struct StructTraits<gfx::mojom::GpuMemoryBufferHandleDataView,
   static const gfx::NativePixmapHandle& native_pixmap_handle(
       const gfx::GpuMemoryBufferHandle& handle);
   static mojo::ScopedHandle mach_port(const gfx::GpuMemoryBufferHandle& handle);
+  static uint32_t array_level(const gfx::GpuMemoryBufferHandle& handle) {
+#if defined(OS_WIN)
+    return handle.array_level;
+#else
+    return 0;
+#endif
+  }
   static bool Read(gfx::mojom::GpuMemoryBufferHandleDataView data,
                    gfx::GpuMemoryBufferHandle* handle);
 };