GitLab

This enables GPU process VulkanSurfaces to present to Scenic views. Each
surface sends a message to the browser over mojo asking to export a node
to attach the surface resources to. Once this export occurs, the surface
contents will be visible in the global scene.

Bug: 861853
Test: run_content_shell \
  --enable-features=VizDisplayCompositor,UseSkiaRenderer,UseSkiaDeferredDisplayList,UiGpuRasterization,OzoneDrmMojo
  --enable-oop-rasterization --enable-vulkan --enable-gpu-rasterization \
  --enable-raster-to-sk-image --use-raster-context-provider \
  --force-gpu-rasterization --use-gl=swiftshader --no-sandbox \
  --disable-gpu-sandbox

Change-Id: Ib39c7f2a6bcb833fbd2cd3e0718229efb69ca940

Reviewed-on: https://chromium-review.googlesource.com/c/1343277Reviewed-by: Ken Rockot <rockot@google.com>
Reviewed-by: Ken Buchanan <kenrb@chromium.org>
Reviewed-by: Robert Kroeger <rjkroege@chromium.org>
Reviewed-by: Sergey Ulanov <sergeyu@chromium.org>
Commit-Queue: Michael Spang <spang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#611883}