If the metrics server is unreachable, we may need to resend a metrics
report later. Instead of keeping the staged report in memory, save it to
disk to avoid loosing data if the system restarts or crashes.
BUG: 23033262
TEST: unit tests.
Change-Id: Idd14964e40f022952469f47d675d8cda9586d7cd
Instead of passing different filenames around, only rely on the metrics
directory and infer the filepath from it. This makes testing easier.
BUG: 23939404
TEST: unit tests.
Change-Id: I79086acc3a546464114fa8ec4656ec04e1c43e35
Instead of using /etc/lsb-release to store the version, channel and
build_target_id, use the Android system properties.
BUG: 22879642
Change-Id: Ic79e74bd14bf8e2c55549c08963a66700b49b544
libchromeos was updated to set the certificates path correctly, we can
enable https by default.
BUG: 23016355
Change-Id: I88393df4a6892055f4865d86de78ba3a2a5b45e8
This makes the import path less confusing:
* metrics/metrics_library.h is imported from the exported headers.
* metricsd/* for includes by the metrics daemon itself.
BUG: 22879597
Change-Id: I9f44ea3a548cae39d4546fcd724e8007f6dd4bd0
