update_engine: Merge remote-tracking branch 'cros/upstream' into cros/master

Done with:
git merge cros/upstream --commit -s recursive

- Added EC key support and its unittests.
- Resolved a conlict on error codes. Since Android versions are not
  uploading any UMA metrics, I gave the priority to the Android version
  Since they can't be changed.
- Changed the openssl functions to get1 version (from get0) version
  because of a current issue with gale. Once the issue is resolved we
  need to change them back.
- Some remaining styling issues fixed by clang-format

BUG=b:163153182
TEST=CQ passes
TEST=unittests

Change-Id: Ib95034422b92433ce26e28336bc4806b34910d38

1 files changed, 23 insertions, 0 deletions

diff --git a/logging.h b/logging.h
new file mode 100644
index 00000000..c9e7483c
--- /dev/null
+++ b/logging.h
@@ -0,0 +1,23 @@
+//
+// Copyright (C) 2020 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+namespace chromeos_update_engine {
+
+// Set up logging. |log_to_system| and |log_to_file| specifies
+// the destination of logs.
+void SetupLogging(bool log_to_system, bool log_to_file);
+
+}  // namespace chromeos_update_engine