Retrieve crash dumps from pending directory

Crash dumps that haven't been uploaded are now kept in pending, rather
than marking them as completed.
https://chromium-review.googlesource.com/c/crashpad/crashpad/+/1010970

Bug: 813163
Change-Id: Ib77479f6a3f85a3dc6a5685c9f97dd1b8e5540a4
Reviewed-on: https://chromium-review.googlesource.com/1024512Reviewed-by: Mike West <mkwst@chromium.org>
Commit-Queue: Joshua Peraza <jperaza@chromium.org>
Cr-Commit-Position: refs/heads/master@{#553563}

content/shell/tools/breakpad_integration_test.py

@@ -50,7 +50,7 @@ def run_test(options, crash_dir, additional_arguments = []):
   # TODO(crbug.com/782923): This test should not reach directly into the
   # Crashpad database, but instead should use crashpad_database_util.
   if sys.platform == 'darwin':
-    dmp_dir = os.path.join(dmp_dir, 'completed')
+    dmp_dir = os.path.join(dmp_dir, 'pending')
   elif sys.platform == 'win32':
     dmp_dir = os.path.join(dmp_dir, 'reports')
   dmp_files = glob.glob(os.path.join(dmp_dir, '*.dmp'))