Reland of Switch Chrome on Linux to libc++ (patchset #1 id:1 of https://codereview.chromium.org/2965693002/ )

Reason for revert:
ANGLE compilation issues should be fixed by https://chromium-review.googlesource.com/557679

Original issue's description:
> Revert of Switch Chrome on Linux to libc++ (patchset #5 id:180001 of https://codereview.chromium.org/2933573002/ )
>
> Reason for revert:
> Breaks https://build.chromium.org/p/chromium.gpu.fyi/builders/GPU%20Linux%20Builder/builds/92009
>
> Original issue's description:
> > Switch Chrome on Linux to libc++
> >
> > Design doc detailing the changes at [1], and announcement to
> > chromium-dev at [2].
> >
> > In addition, this CL updates perf_expectations to increase the number
> > of allowed static initializers.  libc++ adds some initializers from
> > iostream.cpp.  However, this case is net-neutral since the initializer
> > used to live in libstdc++, but has been pushed into the chrome and
> > nacl executables.  The perf_expectations change also required adding
> > NOPRESUBMIT=true to silence a bogus warning.
> >
> > [1] https://docs.google.com/document/d/1zmHUXlpGNXB433wHnr40dLwj7c-USsIVlyAeH7vOI9o/edit#heading=h.bfky2xssferh
> > [2] https://groups.google.com/a/chromium.org/forum/?fromgroups#!topic/chromium-dev/z2YnFCxq0MA
> >
> > BUG=593874
> > R=thakis@chromium.org
> > TBR=rdevlin.cronin@chromium.org
> > CC=thestig@chromium.org
> > NOPRESUBMIT=true
> > CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_chromium_dbg_ng;master.tryserver.chromium.linux:linux_arm;master.tryserver.chromium.linux:linux_chromium_archive_rel_ng;master.tryserver.chromium.linux:linux_chromium_dbg_32_ng
> >
> > Review-Url: https://codereview.chromium.org/2933573002
> > Cr-Commit-Position: refs/heads/master@{#483498}
> > Committed: https://chromium.googlesource.com/chromium/src/+/39fcd6af4d8c9ddcf909b8d489c6ba684d046157
>
> TBR=thakis@chromium.org,rdevlin.cronin@chromium.org,thomasanderson@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=593874
>
> Review-Url: https://codereview.chromium.org/2965693002
> Cr-Commit-Position: refs/heads/master@{#483560}
> Committed: https://chromium.googlesource.com/chromium/src/+/71911249cfd027e31384c7daa1a781773545036c

TBR=thakis@chromium.org,rdevlin.cronin@chromium.org,thomasanderson@chromium.org
BUG=593874
NOPRESUBMIT=true
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_chromium_dbg_ng;master.tryserver.chromium.linux:linux_arm;master.tryserver.chromium.linux:linux_chromium_archive_rel_ng;master.tryserver.chromium.linux:linux_chromium_dbg_32_ng;master.tryserver.chromium.win:win_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.android:android_optional_gpu_tests_rel

Review-Url: https://codereview.chromium.org/2963223003
Cr-Commit-Position: refs/heads/master@{#483644}
8 files changed