mojo: Struct traits for gpu buffer types.

services/ui/public/interfaces/gpu_service.mojom

Index: services/ui/public/interfaces/gpu_service.mojom
diff --git a/services/ui/public/interfaces/gpu_service.mojom b/services/ui/public/interfaces/gpu_service.mojom
index 54bbd9f66bbdef0cc613faca23afc6b97193eb79..aebd04a9d83ff15530696ee074694673883cea49 100644
--- a/services/ui/public/interfaces/gpu_service.mojom
+++ b/services/ui/public/interfaces/gpu_service.mojom
@@ -9,6 +9,7 @@ import "gpu/ipc/common/sync_token.mojom";
 import "services/ui/public/interfaces/channel_handle.mojom";
 import "services/ui/public/interfaces/gpu_memory_buffer.mojom";
 import "ui/gfx/geometry/mojo/geometry.mojom";
+import "ui/gfx/mojo/buffer_types.mojom";
 
 interface GpuService {
   // Tells the GPU service to create a new channel for communication with a
@@ -22,8 +23,8 @@ interface GpuService {
   // Tells the GPU service to create a new GPU memory buffer.
   CreateGpuMemoryBuffer(GpuMemoryBufferId id,
                         gfx.mojom.Size size,
-                        BufferFormat format,
-                        BufferUsage usage,
+                        gfx.mojom.BufferFormat format,
+                        gfx.mojom.BufferUsage usage,
                         uint64 surface_id)
       => (GpuMemoryBufferHandle buffer_handle);