media/gpu/v4l2vd: Fix chromium-style errors

In file included from ../../media/gpu/linux/linux_video_decoder_factory.cc:20:
../../media/gpu/v4l2/v4l2_slice_video_decoder.h:240:47: error: [chromium-style] WeakPtrFactory members which refer to their outer class must be the last member in the outer class definition.
  base::WeakPtrFactory<V4L2SliceVideoDecoder> weak_this_factory_;
                                              ^
../../media/gpu/v4l2/v4l2_slice_video_decoder.h:240:47: error: [chromium-style] WeakPtrFactory members which refer to their outer class must be the last member in the outer class definition.
2 errors generated.

BUG=941330

Change-Id: I978a62dd07095270564cc9d99a2da193ebdb2833
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1689912
Auto-Submit: Michael Spang <spang@chromium.org>
Commit-Queue: Dale Curtis <dalecurtis@chromium.org>
Reviewed-by: Dale Curtis <dalecurtis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#675296}
1 file changed