Enable pcm_s32le audio decoding.

media/test/pipeline_integration_test.cc

Index: media/test/pipeline_integration_test.cc
diff --git a/media/test/pipeline_integration_test.cc b/media/test/pipeline_integration_test.cc
index b19b32c18e5f87292c6c645f1cb8cc495eccc916..69da77064e628bd41ef9bc7828ae3d894aa179b3 100644
--- a/media/test/pipeline_integration_test.cc
+++ b/media/test/pipeline_integration_test.cc
@@ -909,6 +909,14 @@ TEST_F(PipelineIntegrationTest, BasicPlaybackLive) {
             demuxer_->GetTimelineOffset());
 }
 
+TEST_F(PipelineIntegrationTest, S32PlaybackHashed) {
+  ASSERT_EQ(PIPELINE_OK, Start("sfx_s32le.wav", kHashed));
+  Play();
+  ASSERT_TRUE(WaitUntilOnEnded());
+  EXPECT_HASH_EQ(std::string(kNullVideoHash), GetVideoHash());
+  EXPECT_HASH_EQ("3.03,2.86,2.99,3.31,3.57,4.06,", GetAudioHash());
+}
+
 TEST_F(PipelineIntegrationTest, F32PlaybackHashed) {
   ASSERT_EQ(PIPELINE_OK, Start("sfx_f32le.wav", kHashed));
   Play();