Switch from block comments to line comments

The code that parses this is too lenient, it allows too many types of
comments which makes it difficult to process reliably. This change will
allow it to be changed to only allow line comments which are simpler to
process.

Also, reformatted to make indentation consistent.

Tested by running the srcgen/generate_android_src.sh script and
verifying that it did not change the generated code.

Bug: 117818301
Test: see above
Change-Id: Iccf24065882036434f6b900ef42fecc549480f3d
1 file changed