Move VideoBoxesTest.java

The existing implementation depends on an internal library (Mp4Slicer) to assert the output. We have removed the dependency on internal library and used golden data to compare the output.

PiperOrigin-RevId: 508401527

testdata/src/test/assets/muxerdumps/README.md

+# Muxer dump files
+
+To generate a new dump file or to update an existing one:
+
+1. Change `DumpFileAsserts#DUMP_FILE_ACTION` to `WRITE_TO_LOCAL` (for Robolectric tests) or `WRITE_TO_DEVICE` (for Instrumentation tests).
+2. Re-run the test.
+3. Change `DumpFileAsserts#DUMP_FILE_ACTION` back to `COMPARE_WITH_EXISTING`.

testdata/src/test/assets/muxerdumps/video_sample_entry_box_av1.dump

+VideoSampleEntryBox = 0000007d61763031000000000000000100000000000000000000000000000000000a000c004800000048000000000000000100202020202020202020202020202020202020202020202020202020202020200018ffff0000001761763143812000000a09200000019cdbfff30400000010706173700001000000010000

testdata/src/test/assets/muxerdumps/video_sample_entry_box_h264.dump

+VideoSampleEntryBox = 0000009661766331000000000000000100000000000000000000000000000000000a000c004800000048000000000000000100202020202020202020202020202020202020202020202020202020202020200018ffff000000306176634301f4000affe1001867f4000a919b2bf3cb3640000003004000000c83c489658001000568ebe3c44800000010706173700001000000010000

testdata/src/test/assets/muxerdumps/video_sample_entry_box_h265.dump

+VideoSampleEntryBox = 000000d66876633100000000000000010000000000000000000000000000000000300020004800000048000000000000000100202020202020202020202020202020202020202020202020202020202020200018ffff00000070687663430104080000009fc8000000001ef000fcfcf8f800000f03200001001740010c01ffff0408000003009fc800000300001e95980921000100254201010408000003009fc800000300001ec1882165959ae4cae68080000003008000000c8422000100064401c173d08900000010706173700001000000010000

testdata/src/test/assets/muxerdumps/video_sample_entry_box_h265_hdr10.dump

+VideoSampleEntryBox = 000000dd6876633100000000000000010000000000000000000000000000000001000100004800000048000000000000000100202020202020202020202020202020202020202020202020202020202020200018ffff00000077687663430102200000009000000000003cf000fcfdfafa00000f03200001001840010c01ffff02200000030090000003000003003c959809210001002a42010102200000030090000003000003003ca008080404d96566924cae69c2000003000200000300321022000100074401c172b4624000000010706173700001000000010000