exo: Implement zcr_linux_explicit_synchronization_v1

components/exo/buffer.h

Index: components/exo/buffer.h
diff --git a/components/exo/buffer.h b/components/exo/buffer.h
index 42df36ebd80dcfa9358430c7cb10b1e9e082a9eb..6d76c4786d81260490295e66bec3be1fd25eac65 100644
--- a/components/exo/buffer.h
+++ b/components/exo/buffer.h
@@ -11,6 +11,7 @@
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "ui/gfx/geometry/size.h"
+#include "ui/gfx/gpu_fence.h"

[reveman, 2016/10/09 19:03:17]

nit: you can avoid this include here in the header and just forward-declare it
in "namespace gfx" below, consistent with GpuMemoryBuffer. forward-declare is
always preferred in chromium code.

[fooishbar, 2016/10/12 15:41:55]

Done.

 
 namespace base {
 namespace trace_event {
@@ -59,6 +60,7 @@ class Buffer : public base::SupportsWeakPtr<Buffer> {
   // |non_client_usage| is true.
   std::unique_ptr<cc::SingleReleaseCallback> ProduceTextureMailbox(
       cc::TextureMailbox* mailbox,
+      std::unique_ptr<gfx::GpuFence> fence,
       bool secure_output_only,
       bool client_usage);