[WPT sync] Skip the great web_tests mv commit

Add a list of skipped commits when looking for exportable commits.
Currently, there is only one commit in the list: the great
LayoutTests->web_tests move.

Bug: 908445
Change-Id: Ia5cf4f66b93966e2a510a0d04932643a9e6fadaf
Reviewed-on: https://chromium-review.googlesource.com/c/1351451Reviewed-by: Quinten Yearsley <qyearsley@chromium.org>
Commit-Queue: Robert Ma <robertma@chromium.org>
Cr-Commit-Position: refs/heads/master@{#611009}

third_party/blink/tools/blinkpy/w3c/chromium_exportable_commits.py

@@ -8,6 +8,10 @@ from blinkpy.w3c.common import CHROMIUM_WPT_DIR
 
 
 DEFAULT_COMMIT_HISTORY_WINDOW = 10000
+SKIPPED_REVISIONS = [
+    # The great blink mv: https://crbug.com/843412#c13
+    '77578ccb4082ae20a9326d9e673225f1189ebb63',
+]
 
 
 def exportable_commits_over_last_n_commits(
@@ -63,9 +67,9 @@ def _exportable_commits_since(chromium_commit_hash, host, local_wpt, wpt_github,
 
     wpt_path = chromium_repo_root + '/' + CHROMIUM_WPT_DIR
     commit_range = '{}..HEAD'.format(chromium_commit_hash)
-    commit_hashes = host.executive.run_command([
-        'git', 'rev-list', commit_range, '--reverse', '--', wpt_path
-    ], cwd=absolute_chromium_dir(host)).splitlines()
+    skipped_revs = ['^' + rev for rev in SKIPPED_REVISIONS]
+    command = ['git', 'rev-list', commit_range] + skipped_revs + ['--reverse', '--', wpt_path]
+    commit_hashes = host.executive.run_command(command, cwd=absolute_chromium_dir(host)).splitlines()
     chromium_commits = [ChromiumCommit(host, sha=sha) for sha in commit_hashes]
     exportable_commits = []
     errors = []

third_party/blink/tools/blinkpy/w3c/chromium_exportable_commits_unittest.py

@@ -28,7 +28,7 @@ class ChromiumExportableCommitsTest(unittest.TestCase):
         host.executive = mock_git_commands({
             'show': 'fake message',
             'rev-list': 'add087a97844f4b9e307d9a216940582d96db306',
-            'rev-parse': 'add087a97844f4b9e307d9a216940582d96db306',
+            'rev-parse': '/mock-checkout/src',
             'crrev-parse': 'add087a97844f4b9e307d9a216940582d96db306',
             'diff': 'fake diff',
             'diff-tree': (RELATIVE_WEB_TESTS + 'external/wpt/some\n' +
@@ -43,8 +43,8 @@ class ChromiumExportableCommitsTest(unittest.TestCase):
         self.assertIsInstance(commits[0], ChromiumCommit)
         self.assertEqual(host.executive.calls, [
             ['git', 'rev-parse', '--show-toplevel'],
-            ['git', 'rev-list', 'beefcafe..HEAD', '--reverse', '--',
-             'add087a97844f4b9e307d9a216940582d96db306/' + RELATIVE_WEB_TESTS + 'external/wpt/'],
+            ['git', 'rev-list', 'beefcafe..HEAD', '^77578ccb4082ae20a9326d9e673225f1189ebb63',
+             '--reverse', '--', '/mock-checkout/src/' + RELATIVE_WEB_TESTS + 'external/wpt/'],
             ['git', 'footers', '--position', 'add087a97844f4b9e307d9a216940582d96db306'],
             ['git', 'show', '--format=%B', '--no-patch', 'add087a97844f4b9e307d9a216940582d96db306'],
             ['git', 'diff-tree', '--name-only', '--no-commit-id', '-r', 'add087a97844f4b9e307d9a216940582d96db306', '--',