Log MediaExtractor entry point to MediaMetrics

Bug: 170386720
Test: atest libctsmediav2extractor_jni
Test: atest CtsMediaTestCases
Change-Id: I648e27b1b483a646df77e2a88ec5ac8af01a0bb9
Merged-In: I648e27b1b483a646df77e2a88ec5ac8af01a0bb9
12 files changed