mojo: Struct traits for gpu buffer types.

services/ui/public/interfaces/gpu_memory_buffer.mojom

Index: services/ui/public/interfaces/gpu_memory_buffer.mojom
diff --git a/services/ui/public/interfaces/gpu_memory_buffer.mojom b/services/ui/public/interfaces/gpu_memory_buffer.mojom
index c96e442376b7fffa245b2f34e191b08898f31d1b..683da1195dd087fe2c78c467971ee561e5dbf220 100644
--- a/services/ui/public/interfaces/gpu_memory_buffer.mojom
+++ b/services/ui/public/interfaces/gpu_memory_buffer.mojom
@@ -4,32 +4,6 @@
 
 module ui.mojom;
 
-enum BufferFormat {
-  ATC,
-  ATCIA,
-  DXT1,
-  DXT5,
-  ETC1,
-  R_8,
-  RGBA_4444,
-  RGBX_8888,
-  RGBA_8888,
-  BGRX_8888,
-  BGRA_8888,
-  YUV_420,
-  YUV_420_BIPLANAR,
-  UYVY_422,
-  LAST = UYVY_422
-};
-
-enum BufferUsage {
-  GPU_READ,
-  SCANOUT,
-  GPU_READ_CPU_READ_WRITE,
-  GPU_READ_CPU_READ_WRITE_PERSISTENT,
-  LAST = GPU_READ_CPU_READ_WRITE_PERSISTENT
-};
-
 enum GpuMemoryBufferType {
   EMPTY,
   SHARED_MEMORY,