Replace Pipeline::kEnded state and HasEnded() methods with renderer-specific bools.

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 6a7e0a222dbbeb9a17d020f1feddf517cf0c5e28..89c870b2be144a022c9f0b626ba750ef536e1a91 100644
--- a/media/filters/audio_renderer_impl_unittest.cc
+++ b/media/filters/audio_renderer_impl_unittest.cc
@@ -262,12 +262,10 @@ TEST_F(AudioRendererImplTest, EndOfStream) {
   // Fulfill the read with an end-of-stream packet, we shouldn't report ended
   // nor have a read until we drain the internal buffer.
   DeliverEndOfStream();
-  EXPECT_FALSE(renderer_->HasEnded());
 
   // Drain internal buffer, now we should report ended.
   EXPECT_CALL(*this, OnEnded());
   EXPECT_TRUE(ConsumeBufferedData(bytes_buffered(), NULL));
-  EXPECT_TRUE(renderer_->HasEnded());
 }
 
 TEST_F(AudioRendererImplTest, Underflow) {