Revert of Add accelerated video decoder interface, VP8 and H.264 implementations and hook up to V4L2SVDA.

Revert of Add accelerated video decoder interface, VP8 and H.264 implementations and hook up to V4L2SVDA. (patchset #10 id:220001 of https://chromiumcodereview.appspot.com/833063003/)

Reason for revert:
http://build.chromium.org/p/chromium.chromiumos/builders/Linux%20ChromiumOS%20GN/builds/6135/steps/compile/logs/stdio#error1

Original issue's description:
> Add accelerated video decoder interface, VP8 and H.264 implementations and hook up to V4L2SVDA.
>
> An AcceleratedVideoDecoder is a video decoder that requires support from an
> external accelerator (typically a hardware accelerator) to partially
> offload the decode process after parsing stream headers, and performing
> reference frame and state management.
>
> In this design, the hardware-independent decoder implementation interfaces
> with a HW-specific Accelerator to offload last stages of the decode process.
>
> Add the interface for AcceleratedVideoDecoder, decoders for VP8 and H264,
> V4L2-specific Accelerators for VP8 and H264 and a common accelerator/client
> class for V4L2.
>
> TEST=vdatest VP8/H264, mp4 local video playback, apprtc decode
> BUG=chrome-os-partner:33728
>
> Committed: https://crrev.com/04272d3017214b966feba379d78b195e2fd2193d
> Cr-Commit-Position: refs/heads/master@{#311448}

TBR=wuchengli@chromium.org,kcwu@chromium.org,owenlin@chromium.org,xhwang@chromium.org,scherkus@chromium.org,dalecurtis@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=chrome-os-partner:33728
Committed: https://crrev.com/ab83672a28a7764af4e4b81ef166fe0fcd93cf08
Cr-Commit-Position: refs/heads/master@{#311450}

[Pawel Osciak, 2015-01-14 10:53:09]

Created Revert of Add accelerated video decoder interface, VP8 and H.264
implementations and hook up to V4L2SVDA.