Implement HTTP/2 settings field trial parameters.

net/spdy/spdy_session.h

Index: net/spdy/spdy_session.h
diff --git a/net/spdy/spdy_session.h b/net/spdy/spdy_session.h
index aef7606135349635e251938d6bc1eda6039307ac..c0bb294663b4c8d253d1da4af827d4d4da77eb85 100644
--- a/net/spdy/spdy_session.h
+++ b/net/spdy/spdy_session.h
@@ -75,12 +75,6 @@ const int32_t kDefaultInitialWindowSize = 65535;
 // sends a SETTINGS frame with a different value.
 const size_t kInitialMaxConcurrentStreams = 100;
 
-// Specifies the maximum HPACK dynamic table size the server is allowed to set.
-const int kMaxHeaderTableSize = 64 * 1024;
-
-// Specifies the maximum concurrent streams server could send (via push).
-const int kMaxConcurrentPushedStreams = 1000;
-
 // If more than this many bytes have been read or more than that many
 // milliseconds have passed, return ERR_IO_PENDING from ReadLoop.
 const int kYieldAfterBytesRead = 32 * 1024;
@@ -307,7 +301,7 @@ class NET_EXPORT SpdySession : public BufferedSpdyFramerVisitorInterface,
               bool enable_sending_initial_data,
               bool enable_ping_based_connection_checking,
               size_t session_max_recv_window_size,
-              size_t stream_max_recv_window_size,
+              const SettingsMap& settings,
               TimeFunc time_func,
               ServerPushDelegate* push_delegate,
               ProxyDelegate* proxy_delegate,
@@ -1094,6 +1088,12 @@ class NET_EXPORT SpdySession : public BufferedSpdyFramerVisitorInterface,
   // Initialized to OK.
   Error error_on_close_;
 
+  // Settings that are sent in the initial SETTINGS frame
+  // (if |enable_sending_initial_data_| is true),
+  // and also control SpdySession parameters like initial receive window size
+  // and maximum HPACK dynamic table size.
+  const SettingsMap settings_;

[Ryan Hamilton, 2016/12/27 22:32:43]

nit: perhaps this should be initial_settings_?

[Bence, 2016/12/28 00:53:24]

Done.

+
   // Limits
   size_t max_concurrent_streams_;
   size_t max_concurrent_pushed_streams_;
@@ -1151,6 +1151,9 @@ class NET_EXPORT SpdySession : public BufferedSpdyFramerVisitorInterface,
   // this value for the initial send window size.
   int32_t stream_initial_send_window_size_;
 
+  // The maximum HPACK dynamic table size the server is allowed to set.
+  uint32_t max_header_table_size_;
+
   // Initial receive window size for this session's streams. There are
   // plans to add a command line switch that would cause a SETTINGS
   // frame with window size announcement to be sent on startup. Newly