This relands commit 2cd4ac87

Merged-In: I903369dbad37b663a39e80149e25b0634386df6d
Change-Id: I018121bf4d02ccc59c89de39e3d1598deb9cf67b
Bug: 274094720

Bug: 251012627
Test: atest NetHttpTestCases
Change-Id: Icb8b9f38b96d9aad1a092663b6dc03a4bf578dfb

Test: atest TetheringMetricsTest
Change-Id: I1b536ff198119b07e9313f081a8e02e515c67efd

Test: atest CtsNetHttpTestCases
Bug: 273626798, 273626794, 251012627
Change-Id: Ie6f4ee3f17fa8e2dc82a059bc13ad305771ed329

* changes:
  Add support for dropped fields in NetworkTracing
  Add support for NetworkTrace aggregation threshold
  Add fallback in Network Tracing to old format
  Add event bundling in NetworkTraceHandler

Interning is a feature Perfetto offers. You can store details in the
intern table and associate it with an id. Then, each trace packet can
reference just the id rather than the full proto contents. In our case,
we already identify unique contexts, so all we need to do is give them
unique IDs and record that instead.

Bug: 246985031
Test: atest libnetworkstats_test
Change-Id: I84f7673bc41b89390c02b8ec5460adfadbb36173

Dropping fields removes them from the bucketing and from the trace
output (the important part being the bucketing). The most useful is
dropping the local port which is often meaningless and can occasionally
have very high cardinality (leading to less bundling, less aggregation
and more space used by interning).

Bug: 246985031
Test: atest libnetworkstats_test
Change-Id: I2ae3289583fa7f29e60d92c58378f189a564bd81

This reverts commit 2cd4ac87.

Reason for revert: b/273575026

Change-Id: I5b9886465b8a0f71af469d303a39f670a9b0cb68

The aggregation threshold determines the number of packets a particular
bundle has to hit before recording only aggregate results. This allows
individual high-throughput streams to be recorded at a significantly
reduced trace buffer cost.

Bug: 246985031
Test: atest libnetworkstats_test
Change-Id: I9e3c6f013db91919be541860364764e913726cf1

Perfetto has been updated to understand both the bundled and individual
packets, but the change hasn't yet hit stable. Until it does, fall back
to using the single event format.

Also fixes build warning from prior change.

Note: once the change hits Perfetto stable, the two formats behave
identically in the ui/querying/etc.

Bug: 246985031
Test: atest libnetworkstats_test
Change-Id: Ifc0e00f3c73aa1ef485f87f6ed4a9873c193ebb3

Somewhat surprisingly, HandlerThread#quitSafely is *not* a synchronous
method, so the tearDown() method still needs to wait for the thread to
join.

Test: TH
Change-Id: I4297ba057b3d4e67c7b462b6995da637f2479d42

Test: run import script
Change-Id: Idddb7e2bb68c4faa0e0096c029902be368c8e0d1

* changes:
  cronet import: add test dependencies that were imported in aosp/2399270
  cronet import: use folder.origin instead of git.origin
  cronet import: use public chromium repository as a source
  cronet import: add --git-origin-checkout-hook to run gclient

Test: run script
Change-Id: I403ffbf74d7e986978e1f5a2f1a6fc90c256efe6

git.origin uses a bare repo which is not supported by gclient. There may
be ways to get this to work including the git-origin-checkout-hook, but
those are a) really slow and b) much more complex than just using a
folder.origin.

This change also adds support to the import script to configure the
origin folder (i.e. clone the repo and run gclient) before the copybara
script is invoked.

Test: run import script
Change-Id: I6289108271960c87583a059a553b0d0e7db8af68

* changes:
  gn2bp: Remove sqlite from net_unittests
  Revert "gn2bp: Convert cc_objects to cc_static_library"

Bundling groups PacketTraces by their various attributes (e.g. uid, tag,
ports) and outputs a single Perfetto TracePacket per group. Rather than
repeat this information many times, it's only written once. In most
cases, this should reduce the trace size by 5x.

Bug: 246985031
Test: atest libnetworkstats_test
Change-Id: Ia9cb163fb4c673abdab8d442576cf4b12a98dbc6

* changes:
  Add test for the NetworkTraceHandler
  Parse new config options and to batch in callback

This simply checks that setting this option does not crash
cronet or hinder requests.

Bug: 251012627
Test: atest CtsNetHttpTestCases
Change-Id: I4726dee2206331e70bccea69c282979f2d1de160

* Some net files have different include_dirs for protos generated. If the generated file is at A/B/C/src/D/E. The net file expect the
export include dir to be A/B/C/src/

Test: None
Change-Id: I9ebe54094ea6bd2b00645be2bf724889dbcb3c1f

* Remove the python3 calls and replace them with the binary right away.
* Fix action_foreach where sources can be used with {{source_file_name}}

Test: None
Change-Id: I0c2e6fd5135de70339168b9ba5d3b7f3a6866fdc

Apply https://chromium-review.googlesource.com/c/chromium/src/+/4166159

Test: None
Change-Id: I297718dddd86a838367e86b8a0449d23114439b6

Test: atest CtsNetHttpTestCases
Change-Id: If24b12c7d602a3937d80e931b8bfa7f9ef7c14bc

This reverts commit 379d79d1.

Reason for revert: This is breaking the symbols of test library.

Test: None
Change-Id: I3a2e8a9a6ec6ce04038ed34489ece6a1ca053cef