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

media/filters/audio_renderer_impl_unittest.cc

Index: media/filters/audio_renderer_impl_unittest.cc
diff --git a/media/filters/audio_renderer_impl_unittest.cc b/media/filters/audio_renderer_impl_unittest.cc
index cb7626fe0c5b44cd30edcbd4f3ad5cf6b9767375..dc562a3c8217f697f7a5285d554f37915cc88eeb 100644
--- a/media/filters/audio_renderer_impl_unittest.cc
+++ b/media/filters/audio_renderer_impl_unittest.cc
@@ -147,7 +147,6 @@ class AudioRendererImplTest : public ::testing::Test {
     EXPECT_CALL(*decoder_, Initialize(_, _, _))
         .WillOnce(DoAll(SaveArg<2>(&output_cb_),
                         RunCallback<1>(PIPELINE_OK)));
-    EXPECT_CALL(*decoder_, Stop());
     InitializeWithStatus(PIPELINE_OK);
 
     next_timestamp_.reset(new AudioTimestampHelper(
@@ -169,7 +168,6 @@ class AudioRendererImplTest : public ::testing::Test {
     EXPECT_CALL(*decoder_, Initialize(_, _, _))
         .WillOnce(DoAll(SaveArg<2>(&output_cb_),
                         RunCallback<1>(PIPELINE_OK)));
-    EXPECT_CALL(*decoder_, Stop());
 
     WaitableMessageLoopEvent event;
     InitializeRenderer(event.GetPipelineStatusCB());
@@ -186,7 +184,6 @@ class AudioRendererImplTest : public ::testing::Test {
     EXPECT_CALL(*decoder_, Initialize(_, _, _))
         .WillOnce(DoAll(SaveArg<2>(&output_cb_),
                         EnterPendingDecoderInitStateAction(this)));
-    EXPECT_CALL(*decoder_, Stop());
 
     WaitableMessageLoopEvent event;
     InitializeRenderer(event.GetPipelineStatusCB());