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This is a reland of 49d49cc1

Relanding with additional upstream CLs (last one fixing the libfuzzer targets):
   $ git log a6f6a3133..a98de15f3 --date=short --no-merges --format='%ad %ae %s'
    2018-05-23 oysteine Fixed unresolved dependencies on fuzzer targets for the Chrome build
    2018-05-23 lalitm perfetto: add ability to override upload limit flag on debuggable builds
    2018-05-23 lalitm perfetto: move sqlite to the non-ui build deps
    2018-05-22 lalitm perfetto: add sqlite to ui part of buildtools
    2018-05-22 hjd Fix clean build of UI

Original change's description:
> Roll src/third_party/perfetto/ a6f6a3133..d1fe1ee42 (39 commits)
>
> https://android.googlesource.com/platform/external/perfetto.git/+log/a6f6a3133cf7..d1fe1ee42456
>
> $ git log a6f6a3133..d1fe1ee42 --date=short --no-merges --format='%ad %ae %s'
> 2018-05-21 oysteine Re-enabled TraceWriter flushing on destruction
> 2018-05-21 hjd Fix mac build
> 2018-05-21 fmayer Tune values for ftrace_largebuffer.
> 2018-05-21 fmayer Change LOCKDOWN_UNSET to LOCKDOWN_UNCHANGED.
> 2018-05-18 brucedawson Disable features that fail in Chromium builds
> 2018-05-18 fmayer Add test config with larger buffer size.
> 2018-05-18 brucedawson Changes to get Perfetto tracing in Chrome for Windows
> 2018-05-18 fmayer Change wording in trace_to_text output.
> 2018-05-18 fmayer Correctly handle EINTR.
> 2018-05-17 fmayer Output duration of ftrace as well as total trace duration.
> 2018-05-17 primiano Add tdresser@ to ui/OWNERS
> 2018-05-17 dproy Rerun ninja when UI source files change
> 2018-05-17 brucedawson Fix Perfetto export definitions for Windows
> 2018-05-17 primiano Fix fuzzers and reduce noise from ftrace_parser unittest
> 2018-05-16 primiano Add skeleton for UI (Node + TypeScript + WASM  + build integration)
> 2018-05-08 primiano Clean up some TODOs and use PageAllocator in CpuReader
> 2018-05-15 lalitm perfetto: update docs to keep in sync with other copies
> 2018-05-15 fmayer Add -b flag to tools/tmux to run in background.
> 2018-05-15 primiano Roll GN, clang and libc++ to match chromium revisions
> 2018-05-14 primiano Fix mac build, make pipe_stats linux-only
> 2018-05-14 brucedawson Enable protozero tests on Windows
> 2018-05-14 brucedawson Use relative path to import perfetto.gni
> 2018-05-10 brucedawson Get page allocator working on Windows
> 2018-05-10 fmayer Add sanity check for page size.
> 2018-05-10 primiano Introduce WASM toolchain
> 2018-05-10 lalitm protos: fix typos for lint to be happy
> 2018-05-09 fmayer Use dynamically read header_page information.
> 2018-05-09 fmayer Add metatracing to trace perfetto itself.
> 2018-05-09 fmayer Add PRESUBMIT to protect whitelist.
> 2018-05-09 fmayer Add compile_commands.json to gitignore.
> 2018-04-30 hjd trace_to_text: Print FtraceStats
> 2018-05-09 fmayer Allow to parse events/header_page.
> 2018-05-08 brucedawson Enable more unit tests on Windows
> 2018-05-08 fmayer Add script to visualize pipestats.
> 2018-05-08 fmayer Add tool to analyze rate of events.
> 2018-05-08 primiano Limit concurrent traces to 5 to prevent stalls in traced_probes
> 2018-05-08 fmayer Temporary workaround for 32-bit crashes.
> 2018-05-04 fmayer Fix off by one.
> 2018-05-03 fmayer Increase ftrace buffer. Decrease i/o scan batches.
>
> Created with:
>   roll-dep src/third_party/perfetto
>
> Change-Id: I0e085bac9d14b1c55b1be527cd80e4f206240308
> Reviewed-on: https://chromium-review.googlesource.com/1068622
> Commit-Queue: Primiano Tucci <primiano@chromium.org>
> Reviewed-by: Primiano Tucci <primiano@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#560522}

TBR=primiano@chromium.org

Change-Id: I35dad57beeddecb99f4ec48395397714feefd77d
Reviewed-on: https://chromium-review.googlesource.com/1070538
Commit-Queue: oysteine <oysteine@chromium.org>
Reviewed-by: oysteine <oysteine@chromium.org>
Cr-Commit-Position: refs/heads/master@{#561397}