Fold {Audio|Video}Decoder::Stop() into the dtor.

media/base/mock_filters.cc

Index: media/base/mock_filters.cc
diff --git a/media/base/mock_filters.cc b/media/base/mock_filters.cc
index 42ec9bb7e1743ddd33e78a0dd1d27ae47f78753a..eba2de4bfd664ef4ddc3508bf169cc9f5389f80e 100644
--- a/media/base/mock_filters.cc
+++ b/media/base/mock_filters.cc
@@ -56,11 +56,15 @@ MockVideoDecoder::MockVideoDecoder() {
   EXPECT_CALL(*this, HasAlpha()).WillRepeatedly(Return(false));
 }
 
-MockVideoDecoder::~MockVideoDecoder() {}
+MockVideoDecoder::~MockVideoDecoder() {
+  Destroy();
+}
 
 MockAudioDecoder::MockAudioDecoder() {}
 
-MockAudioDecoder::~MockAudioDecoder() {}
+MockAudioDecoder::~MockAudioDecoder() {
+  Destroy();
+}
 
 MockVideoRenderer::MockVideoRenderer() {}