Respect QuicAllowed policy for new streams

net/http/http_network_session.h

Index: net/http/http_network_session.h
diff --git a/net/http/http_network_session.h b/net/http/http_network_session.h
index f45ea432d5f02a251f33f045a6cd5ff5fdcc6174..07508ad6f82822b8ccc27f8d33e50206ab2b0108 100644
--- a/net/http/http_network_session.h
+++ b/net/http/http_network_session.h
@@ -68,6 +68,21 @@ class NET_EXPORT HttpNetworkSession
     : NON_EXPORTED_BASE(public base::NonThreadSafe),
       public base::MemoryCoordinatorClient {
  public:
+  // Shared Parameters - one instance of this struct is intended to be shared
+  // accross multiple HttpNetworkSessions (the default copy constructor of
+  // Params just copies the pointer to SharedParams).
+  struct NET_EXPORT SharedParams {
+    SharedParams();
+    SharedParams(const SharedParams& other);
+    ~SharedParams();
+
+    // Enables QUIC for new streams (if QUIC is enabled).
+    // If SharedParams is missing, assume true.
+    // This is intended for disabling QUIC for new streams by user policy
+    // after the net stack has been initialized.
+    bool enable_quic_for_new_streams;
+  };
+
   struct NET_EXPORT Params {
     Params();
     Params(const Params& other);
@@ -92,6 +107,12 @@ class NET_EXPORT HttpNetworkSession
     uint16_t testing_fixed_https_port;
     bool enable_tcp_fast_open_for_ssl;
 
+    // Holds parameters which can change after initialization
+    // and can be shared accross multiple HttpNetworkSessions.
+    // By default, the pointer is inherited on copy.
+    // May be NULL.
+    SharedParams* shared_dynamic_params;
+
     // Use SPDY ping frames to test for connection health after idle.
     bool enable_spdy_ping_based_connection_checking;
     bool enable_http2;
@@ -195,6 +216,9 @@ class NET_EXPORT HttpNetworkSession
     // Enable HTTP/0.9 for HTTP/HTTPS on ports other than the default one for
     // each protocol.
     bool http_09_on_non_default_ports_enabled;
+
+    // Evaluates if QUIC is enabled for new streams
+    bool is_enable_quic_for_new_streams() const;

[Bence, 2016/12/02 18:53:26]

Rename to |enable_quic_for_new_streams| in accordance with other members.

[pmarko, 2016/12/08 17:02:00]

Done.

   };
 
   enum SocketPoolType {