Refactoring: Create per-connection packet writers in QuicDispatcher.

net/quic/quic_blocked_writer_interface.h

Index: net/quic/quic_blocked_writer_interface.h
diff --git a/net/quic/quic_blocked_writer_interface.h b/net/quic/quic_blocked_writer_interface.h
index a6f6faf8175b822f69c25e6227a7549267f46141..90f3fb37f73fb6065b5453f1e961a10967b0e8f6 100644
--- a/net/quic/quic_blocked_writer_interface.h
+++ b/net/quic/quic_blocked_writer_interface.h
@@ -24,4 +24,16 @@ class NET_EXPORT_PRIVATE QuicBlockedWriterInterface {
 
 }  // namespace net
 
+#if defined(COMPILER_GCC)
+namespace BASE_HASH_NAMESPACE {
+template <>

[wtc, 2014/08/14 20:05:00]

Please add the following comment before this line:

// Hash pointers as if they were int's, but bring more entropy to
// the lower bits.

[dmz, 2014/08/14 21:24:51]

Done.

+struct hash<net::QuicBlockedWriterInterface*> {
+  std::size_t operator()(const net::QuicBlockedWriterInterface* ptr) const {
+    size_t k = reinterpret_cast<size_t>(ptr);
+    return k + (k >> 6);
+  }
+};
+}
+#endif
+
 #endif  // NET_QUIC_QUIC_BLOCKED_WRITER_INTERFACE_H_