[Android] Make adb_install_apk.py support multiple specific devices
[Android] Make adb_install_apk.py support multiple specific devices

Currently, only 1 or all devices can be installed form one invocation.
This changes allows for multiple devices to be specified.

BUG=514449

Review URL: https://codereview.chromium.org/1503933003

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#363637}

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