[inspector] added inspector protocol test runner

[inspector] added inspector protocol test runner

To run tests:
tools/run-tests.py inspector-protocol --shell-dir=out/Release

BUG=chromium:645640
R=dgozman@chromium.org,alph@chromium.org

[kozy, 2016-09-21 19:08:40]

Description was changed from

==========
[inspector] added inspector protocol test runner

BUG=chromium:645640
R=dgozman@chromium.org,alph@chromium.org
==========

to

==========
[inspector] added inspector protocol test runner

To run tests:
tools/run-tests.py inspector-protocol --shell-dir=out/Release

BUG=chromium:645640
R=dgozman@chromium.org,alph@chromium.org
==========

[kozy, 2016-09-21 19:10:00]

Dmitry, please take a look.

Roadmap:
- improve gyp and gn files for inspector-protocol test runner,
- switch protocol tests on for try bots,
- migrate more tests.

[kozy, 2016-09-21 19:10:12]

The CQ bit was checked by kozyatinskiy@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-09-21 19:10:17]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-09-21 19:13:07]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-09-21 19:13:08]

Dry run: Try jobs failed on following builders:
  v8_linux64_asan_rel_ng on master.tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux64_asan_rel_ng/buil...)
  v8_linux64_avx2_rel_ng on master.tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux64_avx2_rel_ng/buil...)
  v8_linux_gcc_compile_rel on master.tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_gcc_compile_rel/bu...)
  v8_linux_nodcheck_rel_ng on master.tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_nodcheck_rel_ng/bu...)

[kozy, 2016-09-21 19:29:46]

The CQ bit was checked by kozyatinskiy@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-09-21 19:29:58]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-09-21 19:37:38]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-09-21 19:37:39]

Dry run: Try jobs failed on following builders:
  v8_linux_chromium_gn_rel on master.tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_chromium_gn_rel/bu...)

[dgozman, 2016-09-22 17:44:49]

Let's split this into three parts:
- task handling with task runner, queue and task;
- testV8Inspector which implements V8InspectorClient, Channel, defines
extensions, takes a task runner;
- inspector-protocol which sets things up, initializes two contexts, creates
extensions there, this includes testcfg.py.

Let's not put any classes under v8_inspector namespace.

https://codereview.chromium.org/2358943002/diff/100001/test/inspector-protoco...
File test/inspector-protocol/channel-impl.cc (right):

https://codereview.chromium.org/2358943002/diff/100001/test/inspector-protoco...
test/inspector-protocol/channel-impl.cc:32: fprintf(stderr,
Is this the correct way to return error from a test?

https://codereview.chromium.org/2358943002/diff/100001/test/inspector-protoco...
File test/inspector-protocol/load-extension.h (right):

https://codereview.chromium.org/2358943002/diff/100001/test/inspector-protoco...
test/inspector-protocol/load-extension.h:14: class LoadExtension : public
v8::Extension {
Looks like this is only used in the runner? Why not call directly?

https://codereview.chromium.org/2358943002/diff/100001/test/inspector-protoco...
File test/inspector-protocol/testcfg.py (right):

https://codereview.chromium.org/2358943002/diff/100001/test/inspector-protoco...
test/inspector-protocol/testcfg.py:45: protocoltestfilename =
os.path.join(self.root, "protocol-test.js")
PROTOCOL_TEST_JS

[kozy, 2016-09-30 02:14:04]

Landed separately:
https://codereview.chromium.org/2361623006/
https://codereview.chromium.org/2368393003/
https://codereview.chromium.org/2372793002/
https://codereview.chromium.org/2370743003/
https://codereview.chromium.org/2369753004/