Mac CoreAnimation compositor in the browser process

gpu/ipc/client/gpu_memory_buffer_impl_io_surface.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "gpu/ipc/client/gpu_memory_buffer_impl_io_surface.h"
 
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
 #include "gpu/ipc/common/gpu_memory_buffer_support.h"
 #include "ui/gfx/buffer_format_util.h"
@@ skipping 66 matching lines @@
   base::ScopedCFTypeRef<IOSurfaceRef> io_surface(
       gfx::CreateIOSurface(size, format));
   DCHECK(io_surface);
   gfx::GpuMemoryBufferId kBufferId(1);
   handle->type = gfx::IO_SURFACE_BUFFER;
   handle->id = kBufferId;
   handle->mach_port.reset(IOSurfaceCreateMachPort(io_surface));
   return base::Bind(&NoOp);
 }
 
+void* GpuMemoryBufferImplIOSurface::GetIOSurface() {
+  return io_surface_.get();
+}
+
 bool GpuMemoryBufferImplIOSurface::Map() {
   DCHECK(!mapped_);
   IOReturn status = IOSurfaceLock(io_surface_, lock_flags_, NULL);
   DCHECK_NE(status, kIOReturnCannotLock);
   mapped_ = true;
   return true;
 }
 
 void* GpuMemoryBufferImplIOSurface::memory(size_t plane) {
   DCHECK(mapped_);
@@ skipping 18 matching lines @@
 
 gfx::GpuMemoryBufferHandle GpuMemoryBufferImplIOSurface::GetHandle() const {
   gfx::GpuMemoryBufferHandle handle;
   handle.type = gfx::IO_SURFACE_BUFFER;
   handle.id = id_;
   handle.mach_port.reset(IOSurfaceCreateMachPort(io_surface_));
   return handle;
 }
 
 }  // namespace gpu