[swarming] Isolate webkit and optimize_for_size.

test/webkit/webkit.isolate

 # Copyright 2015 the V8 project authors. All rights reserved.

[kjellander_chromium, 2015/10/14 15:06:42]

Hm, I don't quite follow. This is identical to intl.isolate and which means
webkit_run in webkit.gyp is identical to intl_run in intl.gyp.

What's the difference?

[Michael Achenbach, 2015/10/15 08:41:25]

The location of the file is the difference. The 'files' variable pointing to
'./' includes a different set of files, dependent on where this isolate file is
placed. I didn't manage to remove more boilerplate and shrink the files a bit
more. Each isolated test suite could in theory be sent to a different swarming
bot, where it needs the test files, the executable and our test runner.

It might be possible to generate the isolate files per test suite as part of the
compilation, but I think inventing that logic is more expensive than copying the
file 8 times.

[kjellander_chromium, 2015/10/15 10:31:25]

I thought the files listing was supposed to contain all the files needed to run
the test (i.e. the test executable and any other files it may load for the
test). I recall there's a way to auto-generate it by running the test wrapped in
a script. Adding all of a directory seems potentially wasteful (and it's less
clear to read too).

 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 {
   'variables': {
     'files': [
       './',
     ],
   },
   'includes': [
     '../../src/d8.isolate',
     '../../tools/testrunner/testrunner.isolate',
   ],
 }