[Chromecast] End to end mpeg2ts parser test
[Chromecast] End to end mpeg2ts parser test

Use local file for all MediaSourceTest

To run the this test on chromecast,
1. link cast_shell.pak to /chrome/content_shell.pak
2. set env CR_SOURCE_ROOT to a writable dir
3. put required test file to $CR_SOURCE_ROOT/media/test/data
4. run the test with gtest_filter set to correct test case

Related CL https://codereview.chromium.org/1214493002/

BUG=internal b/17491447

Review URL: https://codereview.chromium.org/1214213003

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#337560}

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