ui: Add gfx::BufferUsage::SCANOUT_CPU_READ_WRITE.

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 3716a61f4b849f5dbb66815214475faae462106f..17b73a71e70968c6c1c18ab368f9c155bab47185 100644
--- a/ui/gfx/mojo/buffer_types_struct_traits.h
+++ b/ui/gfx/mojo/buffer_types_struct_traits.h
@@ -115,6 +115,8 @@ struct EnumTraits<gfx::mojom::BufferUsage, gfx::BufferUsage> {
         return gfx::mojom::BufferUsage::GPU_READ;
       case gfx::BufferUsage::SCANOUT:
         return gfx::mojom::BufferUsage::SCANOUT;
+      case gfx::BufferUsage::SCANOUT_CPU_READ_WRITE:
+        return gfx::mojom::BufferUsage::SCANOUT_CPU_READ_WRITE;
       case gfx::BufferUsage::GPU_READ_CPU_READ_WRITE:
         return gfx::mojom::BufferUsage::GPU_READ_CPU_READ_WRITE;
       case gfx::BufferUsage::GPU_READ_CPU_READ_WRITE_PERSISTENT:
@@ -132,6 +134,9 @@ struct EnumTraits<gfx::mojom::BufferUsage, gfx::BufferUsage> {
       case gfx::mojom::BufferUsage::SCANOUT:
         *out = gfx::BufferUsage::SCANOUT;
         return true;
+      case gfx::mojom::BufferUsage::SCANOUT_CPU_READ_WRITE:
+        *out = gfx::BufferUsage::SCANOUT_CPU_READ_WRITE;
+        return true;
       case gfx::mojom::BufferUsage::GPU_READ_CPU_READ_WRITE:
         *out = gfx::BufferUsage::GPU_READ_CPU_READ_WRITE;
         return true;