Remove QuicChromiumClientStream::Delegate in favor of async methods.

net/quic/chromium/bidirectional_stream_quic_impl_unittest.cc

Index: net/quic/chromium/bidirectional_stream_quic_impl_unittest.cc
diff --git a/net/quic/chromium/bidirectional_stream_quic_impl_unittest.cc b/net/quic/chromium/bidirectional_stream_quic_impl_unittest.cc
index b77499b1f4d0efb478c3e7f2705aea6fcf21c71b..c5f791b4738e715a37e1ddde2bc6d737d63ee879 100644
--- a/net/quic/chromium/bidirectional_stream_quic_impl_unittest.cc
+++ b/net/quic/chromium/bidirectional_stream_quic_impl_unittest.cc
@@ -1585,8 +1585,6 @@ TEST_P(BidirectionalStreamQuicImplTest, ServerSendsRstAfterHeaders) {
   // Server sends a Rst.
   ProcessPacket(ConstructServerRstStreamPacket(1));
 
-  EXPECT_TRUE(delegate->on_failed_called());
-
   TestCompletionCallback cb;
   EXPECT_THAT(delegate->ReadData(cb.callback()),
               IsError(ERR_QUIC_PROTOCOL_ERROR));
@@ -1649,7 +1647,7 @@ TEST_P(BidirectionalStreamQuicImplTest, ServerSendsRstAfterReadData) {
   // Server sends a Rst.
   ProcessPacket(ConstructServerRstStreamPacket(3));
 
-  EXPECT_TRUE(delegate->on_failed_called());
+  delegate->WaitUntilNextCallback(kOnFailed);
 
   EXPECT_THAT(delegate->ReadData(cb.callback()),
               IsError(ERR_QUIC_PROTOCOL_ERROR));
@@ -1703,15 +1701,16 @@ TEST_P(BidirectionalStreamQuicImplTest, SessionClosedBeforeReadData) {
   EXPECT_THAT(rv, IsError(ERR_IO_PENDING));
   session()->connection()->CloseConnection(
       QUIC_NO_ERROR, "test", ConnectionCloseBehavior::SILENT_CLOSE);
+  delegate->WaitUntilNextCallback(kOnFailed);
   EXPECT_TRUE(delegate->on_failed_called());
 
   // Try to send data after OnFailed(), should not get called back.
   scoped_refptr<StringIOBuffer> buf(new StringIOBuffer(kUploadData));
   delegate->SendData(buf, buf->size(), false);
-  base::RunLoop().RunUntilIdle();
 
-  EXPECT_THAT(delegate->ReadData(cb.callback()), IsError(ERR_UNEXPECTED));
-  EXPECT_THAT(delegate->error(), IsError(ERR_UNEXPECTED));
+  EXPECT_THAT(delegate->ReadData(cb.callback()),
+              IsError(ERR_QUIC_PROTOCOL_ERROR));
+  EXPECT_THAT(delegate->error(), IsError(ERR_QUIC_PROTOCOL_ERROR));
   EXPECT_EQ(0, delegate->on_data_read_count());
   EXPECT_EQ(0, delegate->on_data_sent_count());
   EXPECT_EQ(kProtoQUIC, delegate->GetProtocol());