Revert of Roll googletest to 1.8.0. (patchset #7 id:340001 of https://codereview.chromium.org/2779193002/ )

Reason for revert:

Findit(https://goo.gl/kROfz5) identified CL at revision 467833 as the
culprit for failures in the build cycles as shown on:
https://findit-for-me.appspot.com/waterfall/culprit?key=ag9zfmZpbmRpdC1mb3ItbWVyRAsSDVdmU3VzcGVjdGVkQ0wiMWNocm9taXVtL2I1MzlmYTExMjNhMTllNjQ5OWY1ODU4MmRhNTVjYTVhZjlkZjk0YTQM

Original issue's description:
> Roll googletest to 1.8.0.
>
> GoogleTest (gtest) and GoogleMock (gmock) are now hosted into the same
> googletest repository. In order to cope with this, the googletest
> repository is now sourced at third_party/googletest.
>
> The file/directory layout of Google Test is not yet considered stable.
> To minimize disruption while Google Test stabilizes, Chromium code will
> be insulated from third_party/googletest.
>
> * testing/gtest/include/gtest/ and testing/gmock/include/gmock have
>   been populated with headers that forward into the appropriate locations of
>   third_party/googletest
>
> * testing/BUILD.gn has been populated with the targets
>   //testing/gtest(:gtest_main) and //testing/gmock(:gmock_main), which
>   depend on the appropriate //third_party/googletest targets.
>
> All Chromium code should keep depending on the targets and headers
> in testing/{gtest,gmock} for now.
>
> BUG=630705
> TBR=rkc
>
> Review-Url: https://codereview.chromium.org/2779193002
> Cr-Commit-Position: refs/heads/master@{#467833}
> Committed: https://chromium.googlesource.com/chromium/src/+/b539fa1123a19e6499f58582da55ca5af9df94a4

TBR=thakis@chromium.org,dpranke@chromium.org,agl@chromium.org,rkc@chromium.org,skobes@chromium.org,pwnall@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=630705

Review-Url: https://codereview.chromium.org/2847043002
Cr-Original-Commit-Position: refs/heads/master@{#467852}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: ed7b62615d138c4d629540bab4a2757da5551134
2 files changed