Update: merging creates a LOT of lint errors. This is going to take longer than I thought.

CL up: https://codereview.chromium.org/2575293002

Initially I merged a couple flaky test bugs into similar bugs that predated them, but because the tests in a lot of the conflicting bugs weren't exactly 1:1 I opted to comment out the offending tests in RandomOrderExpectations and will circle back on them later.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/8e38a374d43495ce0232f214febecceb7353e412

commit 8e38a374d43495ce0232f214febecceb7353e412
Author: jeffcarp <jeffcarp@chromium.org>
Date: Fri Dec 16 01:12:15 2016

Merge RandomOrderExpectations into TestExpectations

Mark tests with pre-existing lines above as possible duplicates. Will follow up on each of those.

BUG= 674313 

Review-Url: https://codereview.chromium.org/2575293002
Cr-Commit-Position: refs/heads/master@{#438974}

[delete] https://crrev.com/0c641b54f863dca5fdd30c5e5375af919157d891/third_party/WebKit/LayoutTests/RandomOrderExpectations
[modify] https://crrev.com/8e38a374d43495ce0232f214febecceb7353e412/third_party/WebKit/LayoutTests/TestExpectations

I created  https://crbug.com/675023  to follow up on the duplicates mentioned above.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/tools/build.git/+/058c848fbfd7a3e00b990abbc3cda496fb4a5a68

commit 058c848fbfd7a3e00b990abbc3cda496fb4a5a68
Author: Jeff Carpenter <jeffcarp@chromium.org>
Date: Fri Dec 16 19:41:11 2016

Remove RandomOrderExpectations from RandomOrder builder flags

After  https://crbug.com/674313  the file will no longer exist.

BUG= 674313 
R=qyearsley@chromium.org,dpranke@chromium.org

Change-Id: Ib73e9e562c8ea1ef7510a8ae78169b55fa441780
Reviewed-on: https://chromium-review.googlesource.com/420850
Reviewed-by: Dirk Pranke <dpranke@chromium.org>
Reviewed-by: Quinten Yearsley <qyearsley@chromium.org>
Commit-Queue: Dirk Pranke <dpranke@chromium.org>

[modify] https://crrev.com/058c848fbfd7a3e00b990abbc3cda496fb4a5a68/scripts/slave/recipe_modules/chromium_tests/chromium_fyi.py
[modify] https://crrev.com/058c848fbfd7a3e00b990abbc3cda496fb4a5a68/scripts/slave/recipes/chromium.expected/full_chromium_fyi_WebKit_Linux___RandomOrder.json
[modify] https://crrev.com/058c848fbfd7a3e00b990abbc3cda496fb4a5a68/scripts/slave/recipes/chromium.expected/full_chromium_fyi_WebKit_Mac___RandomOrder.json
[modify] https://crrev.com/058c848fbfd7a3e00b990abbc3cda496fb4a5a68/scripts/slave/recipes/chromium.expected/full_chromium_fyi_WebKit_Win___RandomOrder.json