relnote: Refactor stream buffer allocation out into a scoped_ptr.

net/quic/quic_packet_generator.h

Index: net/quic/quic_packet_generator.h
diff --git a/net/quic/quic_packet_generator.h b/net/quic/quic_packet_generator.h
index 923d01e32bddbc0ed89d7ba38ee4a46e1f30c382..f782e3c6c2ec8a6370e38811aa7780d5bec26fb2 100644
--- a/net/quic/quic_packet_generator.h
+++ b/net/quic/quic_packet_generator.h
@@ -258,9 +258,10 @@ class NET_EXPORT_PRIVATE QuicPacketGenerator {
   bool CanSendWithNextPendingFrameAddition() const;
   // Add exactly one pending frame, preferring ack frames over control frames.
   bool AddNextPendingFrame();
-  // Adds a frame and takes ownership of the underlying buffer if the addition
-  // was successful.
-  bool AddFrame(const QuicFrame& frame, char* buffer, bool needs_padding);
+  // Adds a frame and takes ownership of the underlying buffer.
+  bool AddFrame(const QuicFrame& frame,
+                UniqueStreamBuffer buffer,
+                bool needs_padding);
 
   void SerializeAndSendPacket();