Revert "Enable camera blob stream when needed"

This reverts commit 10f4b93635e12f9fa0cba1641a10938ca38ed448.

Reason for revert:

Findit (https://goo.gl/kROfz5) identified CL at revision 601492 as the
culprit for failures in the build cycles as shown on:
https://findit-for-me.appspot.com/waterfall/culprit?key=ag9zfmZpbmRpdC1mb3ItbWVyRAsSDVdmU3VzcGVjdGVkQ0wiMWNocm9taXVtLzEwZjRiOTM2MzVlMTJmOWZhMGNiYTE2NDFhMTA5MzhjYTM4ZWQ0NDgM

Sample Failed Build: https://ci.chromium.org/buildbot/chromium.memory/Linux%20ChromiumOS%20MSan%20Tests/9190

Sample Failed Step: capture_unittests

Original change's description:
> Enable camera blob stream when needed
> 
> Since blob stream needs higher resolution, it causes higher cpu loading
> to require higher resolution and resize to smaller resolution.
> In hangout app, we don't need blob stream. Enabling blob stream when
> needed can save a lot of cpu usage.
> 
> BUG=b:114676133
> TEST=manually test in apprtc and CCA. make sure picture taking still
> works in CCA.
> 
> Change-Id: I9144461bc76627903d0b3b359ce9cf962ff3628c
> Reviewed-on: https://chromium-review.googlesource.com/c/1261242
> Commit-Queue: Heng-ruey Hsu <henryhsu@chromium.org>
> Reviewed-by: Ricky Liang <jcliang@chromium.org>
> Reviewed-by: Xiaohan Wang <xhwang@chromium.org>
> Reviewed-by: Robert Sesek <rsesek@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#601492}

No-Presubmit: true
No-Tree-Checks: true
No-Try: true
BUG=b:114676133

Change-Id: If173ffe9259f7eca849b184806bd56e2a9fbaac4
Reviewed-on: https://chromium-review.googlesource.com/c/1292256
Cr-Commit-Position: refs/heads/master@{#601538}
    FromMojom(media::mojom::PowerLineFrequency input,
              media::PowerLineFrequency* output) {
  switch (input) {
    case media::mojom::PowerLineFrequency::DEFAULT:
      *output = media::PowerLineFrequency::FREQUENCY_DEFAULT;
      return true;
    case media::mojom::PowerLineFrequency::HZ_50:
      *output = media::PowerLineFrequency::FREQUENCY_50HZ;
      return true;
    case media::mojom::PowerLineFrequency::HZ_60:
      *output = media::PowerLineFrequency::FREQUENCY_60HZ;
      return true;
  }
  NOTREACHED();
  return false;
}

    FromMojom(media::mojom::PowerLineFrequency input,
              media::PowerLineFrequency* output) {
  switch (input) {
    case media::mojom::PowerLineFrequency::DEFAULT:
      *output = media::PowerLineFrequency::FREQUENCY_DEFAULT;
      return true;
    case media::mojom::PowerLineFrequency::HZ_50:
      *output = media::PowerLineFrequency::FREQUENCY_50HZ;
      return true;
    case media::mojom::PowerLineFrequency::HZ_60:
      *output = media::PowerLineFrequency::FREQUENCY_60HZ;
      return true;
  }
  NOTREACHED();
  return false;
}
