MediaExtractor.setDataSource is now properly documented as throwing

IOException. Update cts tests.

related-to-build

Change-Id: I60a1b88517a8fbae29d1389babf439519ce77127
diff --git a/tests/tests/media/src/android/media/cts/MediaMuxerTest.java b/tests/tests/media/src/android/media/cts/MediaMuxerTest.java
index b44321c..42ae7a7 100644
--- a/tests/tests/media/src/android/media/cts/MediaMuxerTest.java
+++ b/tests/tests/media/src/android/media/cts/MediaMuxerTest.java
@@ -295,7 +295,7 @@
      * makes sure the samples match.
      */
     private void verifySamplesMatch(int srcMedia, String testMediaPath,
-            int seekToUs) {
+            int seekToUs) throws IOException {
         AssetFileDescriptor testFd = mResources.openRawResourceFd(srcMedia);
         MediaExtractor extractorSrc = new MediaExtractor();
         extractorSrc.setDataSource(testFd.getFileDescriptor(),