Add half-float IOSurface GpuMemoryBuffer support

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 8772ce617412e16f5b8fa1070c3c7a809255b2f5..1c8275260b150dbc8ac0bfca47ed371a7d79720f 100644
--- a/ui/gfx/mojo/buffer_types_struct_traits.h
+++ b/ui/gfx/mojo/buffer_types_struct_traits.h
@@ -40,6 +40,8 @@ struct EnumTraits<gfx::mojom::BufferFormat, gfx::BufferFormat> {
         return gfx::mojom::BufferFormat::BGRX_8888;
       case gfx::BufferFormat::BGRA_8888:
         return gfx::mojom::BufferFormat::BGRA_8888;
+      case gfx::BufferFormat::RGBA_F16:
+        return gfx::mojom::BufferFormat::RGBA_F16;
       case gfx::BufferFormat::YVU_420:
         return gfx::mojom::BufferFormat::YVU_420;
       case gfx::BufferFormat::YUV_420_BIPLANAR:
@@ -93,6 +95,9 @@ struct EnumTraits<gfx::mojom::BufferFormat, gfx::BufferFormat> {
       case gfx::mojom::BufferFormat::BGRA_8888:
         *out = gfx::BufferFormat::BGRA_8888;
         return true;
+      case gfx::mojom::BufferFormat::RGBA_F16:
+        *out = gfx::BufferFormat::RGBA_F16;
+        return true;
       case gfx::mojom::BufferFormat::YVU_420:
         *out = gfx::BufferFormat::YVU_420;
         return true;