[TIMOB-25766] (7_0_X) Android: Revert Android related base64 changes

[hansemannn]

JIRA: https://jira.appcelerator.org/browse/TIMOB-25766

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[sgtcoolguy]

The revert and skipped test look right to me.

I'd strongly prefer we actually added a test case for this exact scenario so we can avoid the regression in the future. Also, Ideally we'd not just revert but fix the issue in a way that avoids this regression and supports the test case we're skipping again.

[ewanharris]

@sgtcoolguy I have one good to go for Android, I just need to test iOS and Windows to ensure I don't break any existing builds, I'll make a PR to mocha-suite Monday

[hansemannn]

@sgtcoolguy The issue was including opening the camera / photo gallery which cannot be handled via unit-tests. Maybe a good case for our appium-suite (cc @SamJHaig)

[sgtcoolguy]

You don't need to use the camera/photo gallery to test it out. I'm digging into this now to write up some tests.

[hansemannn]

We could also use a large image and change its encoding to see the mismatch. Okay

[jquick-axway]

The issue was caused by the blob's byte array being wrongly transcoded to UTF-16 (which changed the binary) before being base64 encoded. So, a simple test would be to create a binary blob from a stream/buffer and then verify that it base64 encodes it correctly. Doing it this way will make the returned result predictable.