Improve Extractor partial read tests.

Partial reads were performed once using a partial size of 1 byte.
This was not enough to detect problems which only occur in combination
with IOExceptions. Partial reads are now only applied when no exception
is thrown.

Moreover, the tests didn't check whether the total number of sampled bytes
is what it is supposed to be. Added a field to the data dumps checking
the total number of bytes in the sampled data.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=181296545

extensions/flac/src/androidTest/assets/bear.flac.0.dump

@@ -25,6 +25,7 @@ track 0:
     language = null
     drmInitData = -
     initializationData:
+  total output bytes = 526272
   sample count = 33
   sample 0:
     time = 0

extensions/flac/src/androidTest/assets/bear.flac.1.dump

@@ -25,6 +25,7 @@ track 0:
     language = null
     drmInitData = -
     initializationData:
+  total output bytes = 362432
   sample count = 23
   sample 0:
     time = 853333

extensions/flac/src/androidTest/assets/bear.flac.2.dump

@@ -25,6 +25,7 @@ track 0:
     language = null
     drmInitData = -
     initializationData:
+  total output bytes = 182208
   sample count = 12
   sample 0:
     time = 1792000

extensions/flac/src/androidTest/assets/bear.flac.3.dump

@@ -25,6 +25,7 @@ track 0:
     language = null
     drmInitData = -
     initializationData:
+  total output bytes = 18368
   sample count = 2
   sample 0:
     time = 2645333

library/core/src/androidTest/assets/flv/sample.flv.0.dump

@@ -26,6 +26,7 @@ track 8:
     drmInitData = -
     initializationData:
       data = length 2, hash 5F7
+  total output bytes = 9529
   sample count = 45
   sample 0:
     time = 112000
@@ -231,6 +232,7 @@ track 9:
     initializationData:
       data = length 30, hash F6F3D010
       data = length 10, hash 7A0D0F2B
+  total output bytes = 89502
   sample count = 30
   sample 0:
     time = 67000

library/core/src/androidTest/assets/mkv/sample.mkv.0.dump

@@ -27,6 +27,7 @@ track 1:
     initializationData:
       data = length 30, hash F6F3D010
       data = length 10, hash 7A0D0F2B
+  total output bytes = 89502
   sample count = 30
   sample 0:
     time = 67000
@@ -170,6 +171,7 @@ track 2:
     language = und
     drmInitData = -
     initializationData:
+  total output bytes = 12120
   sample count = 29
   sample 0:
     time = 129000

library/core/src/androidTest/assets/mkv/sample.mkv.1.dump

@@ -27,6 +27,7 @@ track 1:
     initializationData:
       data = length 30, hash F6F3D010
       data = length 10, hash 7A0D0F2B
+  total output bytes = 30995
   sample count = 22
   sample 0:
     time = 334000
@@ -138,6 +139,7 @@ track 2:
     language = und
     drmInitData = -
     initializationData:
+  total output bytes = 8778
   sample count = 21
   sample 0:
     time = 408000

library/core/src/androidTest/assets/mkv/sample.mkv.2.dump

@@ -27,6 +27,7 @@ track 1:
     initializationData:
       data = length 30, hash F6F3D010
       data = length 10, hash 7A0D0F2B
+  total output bytes = 10158
   sample count = 11
   sample 0:
     time = 700000
@@ -94,6 +95,7 @@ track 2:
     language = und
     drmInitData = -
     initializationData:
+  total output bytes = 4180
   sample count = 10
   sample 0:
     time = 791000

library/core/src/androidTest/assets/mkv/sample.mkv.3.dump

@@ -27,6 +27,7 @@ track 1:
     initializationData:
       data = length 30, hash F6F3D010
       data = length 10, hash 7A0D0F2B
+  total output bytes = 0
   sample count = 0
 track 2:
   format:
@@ -50,6 +51,7 @@ track 2:
     language = und
     drmInitData = -
     initializationData:
+  total output bytes = 1254
   sample count = 3
   sample 0:
     time = 1035000

library/core/src/androidTest/assets/mkv/subsample_encrypted_altref.webm.0.dump

@@ -25,6 +25,7 @@ track 1:
     language = null
     drmInitData = 1305012705
     initializationData:
+  total output bytes = 39
   sample count = 1
   sample 0:
     time = 0

library/core/src/androidTest/assets/mkv/subsample_encrypted_noaltref.webm.0.dump

@@ -25,6 +25,7 @@ track 1:
     language = null
     drmInitData = 1305012705
     initializationData:
+  total output bytes = 24
   sample count = 1
   sample 0:
     time = 0

library/core/src/androidTest/assets/mp3/bear.mp3.0.dump

@@ -25,6 +25,7 @@ track 0:
     language = null
     drmInitData = -
     initializationData:
+  total output bytes = 44544
   sample count = 116
   sample 0:
     time = 0

library/core/src/androidTest/assets/mp3/bear.mp3.1.dump

@@ -25,6 +25,7 @@ track 0:
     language = null
     drmInitData = -
     initializationData:
+  total output bytes = 29568
   sample count = 77
   sample 0:
     time = 928568

library/core/src/androidTest/assets/mp3/bear.mp3.2.dump

@@ -25,6 +25,7 @@ track 0:
     language = null
     drmInitData = -
     initializationData:
+  total output bytes = 14592
   sample count = 38
   sample 0:
     time = 1871586

library/core/src/androidTest/assets/mp3/bear.mp3.3.dump

@@ -25,5 +25,6 @@ track 0:
     language = null
     drmInitData = -
     initializationData:
+  total output bytes = 0
   sample count = 0
 tracksEnded = true

library/core/src/androidTest/assets/mp3/play-trimmed.mp3.0.dump

@@ -25,6 +25,7 @@ track 0:
     language = null
     drmInitData = -
     initializationData:
+  total output bytes = 418
   sample count = 1
   sample 0:
     time = 0

library/core/src/androidTest/assets/mp3/play-trimmed.mp3.1.dump

@@ -25,6 +25,7 @@ track 0:
     language = null
     drmInitData = -
     initializationData:
+  total output bytes = 418
   sample count = 1
   sample 0:
     time = 0

library/core/src/androidTest/assets/mp3/play-trimmed.mp3.2.dump

@@ -25,6 +25,7 @@ track 0:
     language = null
     drmInitData = -
     initializationData:
+  total output bytes = 418
   sample count = 1
   sample 0:
     time = 0

library/core/src/androidTest/assets/mp3/play-trimmed.mp3.3.dump

@@ -25,6 +25,7 @@ track 0:
     language = null
     drmInitData = -
     initializationData:
+  total output bytes = 418
   sample count = 1
   sample 0:
     time = 0

library/core/src/androidTest/assets/mp3/play-trimmed.mp3.unklen.dump

@@ -25,6 +25,7 @@ track 0:
     language = null
     drmInitData = -
     initializationData:
+  total output bytes = 418
   sample count = 1
   sample 0:
     time = 0

library/core/src/androidTest/assets/mp4/sample.mp4.0.dump

@@ -27,6 +27,7 @@ track 0:
     initializationData:
       data = length 29, hash 4746B5D9
       data = length 10, hash 7A0D0F2B
+  total output bytes = 89876
   sample count = 30
   sample 0:
     time = 0
@@ -171,6 +172,7 @@ track 1:
     drmInitData = -
     initializationData:
       data = length 2, hash 5F7
+  total output bytes = 9529
   sample count = 45
   sample 0:
     time = 44000

library/core/src/androidTest/assets/mp4/sample.mp4.1.dump

@@ -27,6 +27,7 @@ track 0:
     initializationData:
       data = length 29, hash 4746B5D9
       data = length 10, hash 7A0D0F2B
+  total output bytes = 89876
   sample count = 30
   sample 0:
     time = 0
@@ -171,6 +172,7 @@ track 1:
     drmInitData = -
     initializationData:
       data = length 2, hash 5F7
+  total output bytes = 7464
   sample count = 33
   sample 0:
     time = 322639

library/core/src/androidTest/assets/mp4/sample.mp4.2.dump

@@ -27,6 +27,7 @@ track 0:
     initializationData:
       data = length 29, hash 4746B5D9
       data = length 10, hash 7A0D0F2B
+  total output bytes = 89876
   sample count = 30
   sample 0:
     time = 0
@@ -171,6 +172,7 @@ track 1:
     drmInitData = -
     initializationData:
       data = length 2, hash 5F7
+  total output bytes = 4019
   sample count = 18
   sample 0:
     time = 670938

library/core/src/androidTest/assets/mp4/sample.mp4.3.dump

@@ -27,6 +27,7 @@ track 0:
     initializationData:
       data = length 29, hash 4746B5D9
       data = length 10, hash 7A0D0F2B
+  total output bytes = 89876
   sample count = 30
   sample 0:
     time = 0
@@ -171,6 +172,7 @@ track 1:
     drmInitData = -
     initializationData:
       data = length 2, hash 5F7
+  total output bytes = 470
   sample count = 3
   sample 0:
     time = 1019238

library/core/src/androidTest/assets/mp4/sample_fragmented.mp4.0.dump

@@ -27,6 +27,7 @@ track 0:
     initializationData:
       data = length 29, hash 4746B5D9
       data = length 10, hash 7A0D0F2B
+  total output bytes = 85933
   sample count = 30
   sample 0:
     time = 66000
@@ -171,6 +172,7 @@ track 1:
     drmInitData = -
     initializationData:
       data = length 5, hash 2B7623A
+  total output bytes = 18257
   sample count = 46
   sample 0:
     time = 0

library/core/src/androidTest/assets/mp4/sample_fragmented_sei.mp4.0.dump

@@ -27,6 +27,7 @@ track 0:
     initializationData:
       data = length 29, hash 4746B5D9
       data = length 10, hash 7A0D0F2B
+  total output bytes = 85933
   sample count = 30
   sample 0:
     time = 66000
@@ -171,6 +172,7 @@ track 1:
     drmInitData = -
     initializationData:
       data = length 5, hash 2B7623A
+  total output bytes = 18257
   sample count = 46
   sample 0:
     time = 0
@@ -378,5 +380,6 @@ track 3:
     language = null
     drmInitData = -
     initializationData:
+  total output bytes = 0
   sample count = 0
 tracksEnded = true

library/core/src/androidTest/assets/ogg/bear.opus.0.dump

@@ -28,6 +28,7 @@ track 0:
       data = length 19, hash BFE794DB
       data = length 8, hash CA22068C
       data = length 8, hash 79C07075
+  total output bytes = 25541
   sample count = 275
   sample 0:
     time = 0

library/core/src/androidTest/assets/ogg/bear.opus.1.dump

@@ -28,6 +28,7 @@ track 0:
       data = length 19, hash BFE794DB
       data = length 8, hash CA22068C
       data = length 8, hash 79C07075
+  total output bytes = 17031
   sample count = 184
   sample 0:
     time = 910000

library/core/src/androidTest/assets/ogg/bear.opus.2.dump

@@ -28,6 +28,7 @@ track 0:
       data = length 19, hash BFE794DB
       data = length 8, hash CA22068C
       data = length 8, hash 79C07075
+  total output bytes = 8698
   sample count = 92
   sample 0:
     time = 1830000

library/core/src/androidTest/assets/ogg/bear.opus.3.dump

@@ -28,6 +28,7 @@ track 0:
       data = length 19, hash BFE794DB
       data = length 8, hash CA22068C
       data = length 8, hash 79C07075
+  total output bytes = 126
   sample count = 1
   sample 0:
     time = 2741000

library/core/src/androidTest/assets/ogg/bear.opus.unklen.dump

@@ -28,6 +28,7 @@ track 0:
       data = length 19, hash BFE794DB
       data = length 8, hash CA22068C
       data = length 8, hash 79C07075
+  total output bytes = 25541
   sample count = 275
   sample 0:
     time = 0

library/core/src/androidTest/assets/ogg/bear_flac.ogg.0.dump

@@ -26,6 +26,7 @@ track 0:
     drmInitData = -
     initializationData:
       data = length 42, hash 83F6895
+  total output bytes = 164431
   sample count = 33
   sample 0:
     time = 0

library/core/src/androidTest/assets/ogg/bear_flac.ogg.1.dump

@@ -26,6 +26,7 @@ track 0:
     drmInitData = -
     initializationData:
       data = length 42, hash 83F6895
+  total output bytes = 113666
   sample count = 23
   sample 0:
     time = 853333

library/core/src/androidTest/assets/ogg/bear_flac.ogg.2.dump

@@ -26,6 +26,7 @@ track 0:
     drmInitData = -
     initializationData:
       data = length 42, hash 83F6895
+  total output bytes = 55652
   sample count = 12
   sample 0:
     time = 1792000

library/core/src/androidTest/assets/ogg/bear_flac.ogg.3.dump

@@ -26,6 +26,7 @@ track 0:
     drmInitData = -
     initializationData:
       data = length 42, hash 83F6895
+  total output bytes = 445
   sample count = 1
   sample 0:
     time = 2730666

library/core/src/androidTest/assets/ogg/bear_flac.ogg.unklen.dump

@@ -26,6 +26,7 @@ track 0:
     drmInitData = -
     initializationData:
       data = length 42, hash 83F6895
+  total output bytes = 164431
   sample count = 33
   sample 0:
     time = 0

library/core/src/androidTest/assets/ogg/bear_flac_noseektable.ogg.0.dump

@@ -26,6 +26,7 @@ track 0:
     drmInitData = -
     initializationData:
       data = length 42, hash 83F6895
+  total output bytes = 164431
   sample count = 33
   sample 0:
     time = 0

library/core/src/androidTest/assets/ogg/bear_flac_noseektable.ogg.1.dump

@@ -26,6 +26,7 @@ track 0:
     drmInitData = -
     initializationData:
       data = length 42, hash 83F6895
+  total output bytes = 113666
   sample count = 23
   sample 0:
     time = 853333