NOT for review (for discussion): Query IOSurfaceIsInUse in the browser process

gpu/ipc/common/gpu_command_buffer_traits.cc

Index: gpu/ipc/common/gpu_command_buffer_traits.cc
diff --git a/gpu/ipc/common/gpu_command_buffer_traits.cc b/gpu/ipc/common/gpu_command_buffer_traits.cc
index a6d68c3fbded4ff33614d9b93bacc8d43c998fb5..84b127d879c83bf346a531d478c35fd572838b7b 100644
--- a/gpu/ipc/common/gpu_command_buffer_traits.cc
+++ b/gpu/ipc/common/gpu_command_buffer_traits.cc
@@ -11,6 +11,7 @@
 #include "gpu/command_buffer/common/mailbox_holder.h"
 #include "gpu/command_buffer/common/sync_token.h"
 #include "gpu/command_buffer/common/texture_in_use_response.h"
+#include "ui/gfx/ipc/gfx_param_traits.h"
 
 // Generate param traits size methods.
 #include "ipc/param_traits_size_macros.h"
@@ -125,33 +126,40 @@ void ParamTraits<gpu::SyncToken>::Log(const param_type& p, std::string* l) {
 void ParamTraits<gpu::TextureInUseResponse>::GetSize(base::PickleSizer* s,
                                                      const param_type& p) {
   GetParamSize(s, p.texture);
-  GetParamSize(s, p.in_use);
+  GetParamSize(s, p.gpu_memory_buffer_handle);
+  GetParamSize(s, p.in_use_valid);
 }
 
 void ParamTraits<gpu::TextureInUseResponse>::Write(base::Pickle* m,
                                                    const param_type& p) {
   WriteParam(m, p.texture);
-  WriteParam(m, p.in_use);
+  WriteParam(m, p.gpu_memory_buffer_handle);
+  WriteParam(m, p.in_use_valid);
 }
 
 bool ParamTraits<gpu::TextureInUseResponse>::Read(const base::Pickle* m,
                                                   base::PickleIterator* iter,
                                                   param_type* p) {
   uint32_t texture = 0;
-  bool in_use = false;
+  gfx::GpuMemoryBufferHandle gpu_memory_buffer_handle;
+  bool in_use_valid = false;
 
-  if (!ReadParam(m, iter, &texture) || !ReadParam(m, iter, &in_use)) {
+  if (!ReadParam(m, iter, &texture) ||
+      !ReadParam(m, iter, &gpu_memory_buffer_handle) ||
+      !ReadParam(m, iter, &in_use_valid)) {
     return false;
   }
 
   p->texture = texture;
-  p->in_use = in_use;
+  p->gpu_memory_buffer_handle = gpu_memory_buffer_handle;
+  p->in_use_valid = in_use_valid;
   return true;
 }
 
 void ParamTraits<gpu::TextureInUseResponse>::Log(const param_type& p,
                                                  std::string* l) {
-  *l += base::StringPrintf("[%u: %d]", p.texture, static_cast<int>(p.in_use));
+  *l += base::StringPrintf("[%u: %d]", p.texture,
+                           static_cast<int>(p.in_use_valid));
 }
 
 void ParamTraits<gpu::Mailbox>::GetSize(base::PickleSizer* s,