Merge "transcoding: Remove the dummy file from ag/11897369"

transcoding: Add tests for transcoding to internal/external storage.

Bug: 145628554

Test: unit testing

Change-Id: If0a75ba3101c7d9261ccae95f8b82f8b41704592

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# Date:      Mon Jun 15 15:44:21 2020 -0700

# Committer: hkuang <hkuang@google.com>

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# On branch drv6

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# Changes to be committed:

#	modified:   media/tests/MediaTranscodingTest/src/com/android/mediatranscodingtest/MediaTranscodeManagerWithMockServiceTest.java

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