Begin importing WPT runner codebase into Chromium.

This code is used to run WPT tests in the public upstream repository,
and is being integrated into Chromium CI.

This change begins the automatic import of this code, as well as adding
several lint and presubmit check exclusions.

Bug: 937369
Change-Id: Ie9409e671b0c06a10bb509a53946687c0b7a3f65
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1495372
Reviewed-by: Dirk Pranke <dpranke@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Reviewed-by: Robert Ma <robertma@chromium.org>
Commit-Queue: Luke Z <lpz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#637373}

PRESUBMIT.py

@@ -1378,7 +1378,7 @@ def _CheckForVersionControlConflictsInFile(input_api, f):
   pattern = input_api.re.compile('^(?:<<<<<<<|>>>>>>>) |^=======$')
   errors = []
   for line_num, line in f.ChangedContents():
-    if f.LocalPath().endswith('.md'):
+    if f.LocalPath().endswith(('.md', '.rst', '.txt')):
       # First-level headers in markdown look a lot like version control
       # conflict markers. http://daringfireball.net/projects/markdown/basics
       continue

third_party/blink/PRESUBMIT.py

@@ -25,8 +25,9 @@
 
 
 _EXCLUDED_PATHS = (
-    # This directory is created and updated via a script.
+    # These directories are created and updated via a script.
     r'^third_party[\\\/]blink[\\\/]tools[\\\/]blinkpy[\\\/]third_party[\\\/]wpt[\\\/]wpt[\\\/].*',
+    r'^third_party[\\\/]blink[\\\/]web_tests[\\\/]external[\\\/]wpt[\\\/]tools[\\\/].*',
 )
 
 

third_party/blink/web_tests/W3CImportExpectations

@@ -153,10 +153,28 @@ external/wpt/html/rendering/replaced-elements/svg-embedded-sizing/svg-in-object-
 
 # The wpt tools (including manifest and wptserve) are checked in to
 # blinkpy/third_party/wpt so that we can manually update them and keep
-# a stable pinned version.
-external/wpt/tools [ Skip ]
-external/wpt/wpt [ Skip ]
-external/wpt/wpt.py [ Skip ]
+# a stable pinned version. This manual import supports the legacy layout
+# test runner (run_web_tests).
+# The tools directory is also automatically imported alongside the tests
+# in order to run wptrunner in the Chromium CQ. The following exceptions
+# are for directories we don't need.
+external/wpt/tools/ci/tests [ Skip ]
+external/wpt/tools/gitignore/tests [ Skip ]
+external/wpt/tools/lint/tests [ Skip ]
+external/wpt/tools/manifest/tests [ Skip ]
+external/wpt/tools/pywebsocket/example [ Skip ]
+external/wpt/tools/pywebsocket/tests [ Skip ]
+external/wpt/tools/scripts [ Skip ]
+external/wpt/tools/wpt/tests [ Skip ]
+external/wpt/tools/wptrunner/docs [ Skip ]
+external/wpt/tools/wptrunner/test [ Skip ]
+external/wpt/tools/wptrunner/wptrunner/browsers/sauce_setup [ Skip ]
+external/wpt/tools/wptrunner/wptrunner/tests [ Skip ]
+external/wpt/tools/wptserve/docs [ Skip ]
+external/wpt/tools/wptserve/tests [ Skip ]
+# These two files contain comments that look like version control markers
+external/wpt/tools/third_party/hyper/hyper/packages/rfc3986/__init__.py [ Skip ]
+external/wpt/tools/third_party/pytest/src/_pytest/_argcomplete.py [ Skip ]
 
 # The outputs of these tests contain random values generated by token()
 # in common/utils.js. These could be imported if the results for

tools/checkperms/checkperms.py

@@ -173,6 +173,7 @@
   'native_client_sdk/src/build_tools/sdk_tools/third_party/fancy_urllib/'
       '__init__.py',
   'out/',
+  'third_party/blink/web_tests/external/wpt/tools/third_party/',
   # TODO(maruel): Fix these.
   'third_party/devscripts/licensecheck.pl.vanilla',
   'third_party/libxml/linux/xml2-config',