Revert of Shape Detection: Implement FaceDetection on Mac as out-of-process service

Revert of Shape Detection: Implement FaceDetection on Mac as out-of-process service (patchset #14 id:1670001 of https://codereview.chromium.org/2528743002/ )

Reason for revert:
Culprit suspect for blink_heap_unittests failing on chromium.webkit/WebKit Android (Nexus4), e.g. https://uberchromegw.corp.google.com/i/chromium.webkit/builders/WebKit%20Android%20%28Nexus4%29/builds/59943/steps/blink_heap_unittests/logs/stdio


Original issue's description:
> Shape Detection: Implement FaceDetection on Mac as out-of-process service
> 
> This CL implements FaceDetection in //services/shape_detection. The Browser
> forwards requests from the Renderer process to a Utility process, which detects
> faces using Mac native CoreImage library and returns detection result.
> 
> 
> 
> DESIGN_DOC=http://tinyurl.com/shape-detection-in-chromium
> BUG=659139
> TEST=content/browser/shapedetection/shapedetection_browsertest.cc
> CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_site_isolation
> 
> Review-Url: https://codereview.chromium.org/2528743002
> Cr-Commit-Position: refs/heads/master@{#445942}
> Committed: https://chromium.googlesource.com/chromium/src/+/6dd8f460d0fe4567a7cb14ee5a3acc183d5325fb

TBR=jochen@chromium.org,avi@chromium.org,haraken@chromium.org,mcasas@chromium.org,rockot@chromium.org,rsesek@chromium.org,tsepez@chromium.org,yzshen@chromium.org,xianglu@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=659139

[mastiz, 2017-01-25 15:09:32]

The CQ bit was checked by mastiz@chromium.org

[mastiz, 2017-01-25 15:09:33]

Created Revert of Shape Detection: Implement FaceDetection on Mac as
out-of-process service

[commit-bot: I haz the power, 2017-01-25 15:09:46]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[Ken Rockot(use gerrit already), 2017-01-25 15:45:39]

The CQ bit was unchecked by rockot@chromium.org

[Ken Rockot(use gerrit already), 2017-01-25 15:46:42]

Sorry, we're aware of this bug. It's not this CL that is at fault and a fix is
in flight.

[mastiz, 2017-01-25 15:52:51]

On 2017/01/25 15:46:42, Ken Rockot wrote:
> Sorry, we're aware of this bug. It's not this CL that is at fault and a fix is
> in flight.

Thanks!