Add a new command buffer function glScheduleCALayerInUseQueryCHROMIUM.

gpu/ipc/common/gpu_messages.h

Index: gpu/ipc/common/gpu_messages.h
diff --git a/gpu/ipc/common/gpu_messages.h b/gpu/ipc/common/gpu_messages.h
index 908643cca74ed14265c927e3f00bff9bd88afa96..11fd5896cd0e7f289336c55003744d0670127b61 100644
--- a/gpu/ipc/common/gpu_messages.h
+++ b/gpu/ipc/common/gpu_messages.h
@@ -47,6 +47,14 @@
 
 #define IPC_MESSAGE_START GpuChannelMsgStart
 
+// Singly-included section for typedefs.
+#ifndef GPU_IPC_COMMON_GPU_MESSAGES_H_
+#define GPU_IPC_COMMON_GPU_MESSAGES_H_
+
+using SwapBuffersCompletedIOSurfaceInUseQuery = std::pair<uint32_t, bool>;

[piman, 2016/06/14 00:58:56]

nit: may I suggest an actual struct:

IPC_STRUCT_BEGIN(SwapBuffersCompletedIOSurfaceInUseQuery)
  IPC_STRUCT_MEMBER(uint32_t, texture)
  IPC_STRUCT_MEMBER(uint32_t, in_use)
IPC_STRUCT_END()


That way, the code that uses it can say ".texture" and ".in_use" instead of
".first" and ".second".

[erikchen, 2016/06/14 01:47:51]

good point. done.

+
+#endif  // GPU_IPC_COMMON_GPU_MESSAGES_H_
+
 IPC_STRUCT_BEGIN(GPUCommandBufferConsoleMessage)
   IPC_STRUCT_MEMBER(int32_t, id)
   IPC_STRUCT_MEMBER(std::string, message)
@@ -86,6 +94,8 @@ IPC_STRUCT_BEGIN(GpuCommandBufferMsg_SwapBuffersCompleted_Params)
   IPC_STRUCT_MEMBER(gfx::ScopedRefCountedIOSurfaceMachPort, io_surface)
   IPC_STRUCT_MEMBER(gfx::Size, pixel_size)
   IPC_STRUCT_MEMBER(float, scale_factor)
+  IPC_STRUCT_MEMBER(std::vector<SwapBuffersCompletedIOSurfaceInUseQuery>,
+                    in_use_queries)
 #endif
   IPC_STRUCT_MEMBER(std::vector<ui::LatencyInfo>, latency_info)
   IPC_STRUCT_MEMBER(gfx::SwapResult, result)