Properly ref-count the EndOfStream buffers.

Also reverts most of the test change made in r105647.

BUG=99596
TEST=Valgrind on media_unittests.

Review URL: http://codereview.chromium.org/8319010

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@105890 0039d316-1c4b-4281-b951-d872f2087c98

media/filters/ffmpeg_demuxer.cc

@@ -142,7 +142,7 @@ void FFmpegDemuxerStream::Stop() {
   buffer_queue_.clear();
   for (ReadQueue::iterator it = read_queue_.begin();
        it != read_queue_.end(); ++it) {
-    it->Run(new DataBuffer(0));
+    it->Run(scoped_refptr<Buffer>(new DataBuffer(0)));
   }
   read_queue_.clear();
   stopped_ = true;
@@ -165,7 +165,7 @@ void FFmpegDemuxerStream::Read(const ReadCallback& read_callback) {
   //
   // TODO(scherkus): it would be cleaner if we replied with an error message.
   if (stopped_) {
-    read_callback.Run(new DataBuffer(0));
+    read_callback.Run(scoped_refptr<Buffer>(new DataBuffer(0)));
     return;
   }
 
@@ -194,7 +194,7 @@ void FFmpegDemuxerStream::ReadTask(const ReadCallback& read_callback) {
   //
   // TODO(scherkus): it would be cleaner if we replied with an error message.
   if (stopped_) {
-    read_callback.Run(new DataBuffer(0));
+    read_callback.Run(scoped_refptr<Buffer>(new DataBuffer(0)));
     return;
   }
 

media/filters/ffmpeg_demuxer_unittest.cc

@@ -36,10 +36,6 @@ MATCHER(IsEndOfStreamBuffer,
   return arg->IsEndOfStream();
 }
 
-ACTION(DeleteArg0Buffer) {
-  scoped_refptr<Buffer> buffer(arg0);
-}
-
 // Fixture class to facilitate writing tests.  Takes care of setting up the
 // FFmpeg, pipeline and filter host mocks.
 class FFmpegDemuxerTest : public testing::Test {
@@ -407,8 +403,7 @@ TEST_F(FFmpegDemuxerTest, Stop) {
 
   // The callback should be immediately deleted.  We'll use a checkpoint to
   // verify that it has indeed been deleted.
-  EXPECT_CALL(*callback, Run(IsEndOfStreamBuffer()))
-      .WillOnce(DeleteArg0Buffer());
+  EXPECT_CALL(*callback, Run(IsEndOfStreamBuffer()));
   EXPECT_CALL(*callback, OnDelete());
   EXPECT_CALL(*this, CheckPoint(1));
 
@@ -447,8 +442,7 @@ TEST_F(FFmpegDemuxerTest, StreamReadAfterStopAndDemuxerDestruction) {
 
   // The callback should be immediately deleted.  We'll use a checkpoint to
   // verify that it has indeed been deleted.
-  EXPECT_CALL(*callback, Run(IsEndOfStreamBuffer()))
-      .WillOnce(DeleteArg0Buffer());
+  EXPECT_CALL(*callback, Run(IsEndOfStreamBuffer()));
   EXPECT_CALL(*callback, OnDelete());
   EXPECT_CALL(*this, CheckPoint(1));