Don't require Fuchsia security review for Crashpad

Change-Id: I6743453668b1db418d7e6c043bcc3c48d6fe865d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2575721
Commit-Queue: Daniel Cheng <dcheng@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Cr-Commit-Position: refs/heads/master@{#834467}

PRESUBMIT.py

@@ -2952,6 +2952,11 @@ def _AddOwnersFilesToCheckForFuchsiaSecurityOwners(input_api, to_check):
       '*.fidl',
   ]
 
+  # Don't check for owners files for changes in these directories.
+  exclude_paths = [
+      'third_party/crashpad/*',
+  ]
+
   def AddPatternToCheck(input_file, pattern):
     owners_file = input_api.os_path.join(
         input_api.os_path.dirname(input_file.LocalPath()), 'OWNERS')
@@ -2971,6 +2976,13 @@ def AddPatternToCheck(input_file, pattern):
   # for. We should only nag patch authors about per-file rules if a file in that
   # directory would match that pattern.
   for f in input_api.AffectedFiles(include_deletes=False):
+    skip = False
+    for exclude in exclude_paths:
+      if input_api.fnmatch.fnmatch(f.LocalPath(), exclude):
+        skip = True
+    if skip:
+      continue
+
     for pattern in file_patterns:
       if input_api.fnmatch.fnmatch(
           input_api.os_path.basename(f.LocalPath()), pattern):

PRESUBMIT_test.py

@@ -2157,6 +2157,18 @@ def testComponentManifestV2NeedsSecurityOwner(self):
         'Found OWNERS files that need to be updated for IPC security review ' +
         'coverage.\nPlease update the OWNERS files below:', errors[0].message)
 
+  def testThirdPartyTestsDoNotRequireSecurityOwner(self):
+    mock_input_api = MockInputApi()
+    mock_input_api.files = [
+      MockAffectedFile('third_party/crashpad/test/tests.cmx',
+                       [
+                         'const char kNoEnforcement[] = "Security?!? Pah!";',
+                       ])]
+    mock_output_api = MockOutputApi()
+    errors = PRESUBMIT.CheckSecurityOwners(
+        mock_input_api, mock_output_api)
+    self.assertEqual([], errors)
+
   def testOtherFuchsiaChangesDoNotRequireSecurityOwner(self):
     mock_input_api = MockInputApi()
     mock_input_api.files = [