Server push cancellation: add methods in session layer to cancel push given the pushed url. Not in …

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 af2ff0cd29f30c328afd64a36c2d44e6396ec47c..fcd2badc18e92c9e04519d1a2d60b7d5f84c6e06 100644
--- a/net/spdy/spdy_session.h
+++ b/net/spdy/spdy_session.h
@@ -573,6 +573,8 @@ class NET_EXPORT SpdySession : public BufferedSpdyFramerVisitorInterface,
   FRIEND_TEST_ALL_PREFIXES(SpdySessionTest, GetActivePushStream);
   FRIEND_TEST_ALL_PREFIXES(SpdySessionTest, DeleteExpiredPushStreams);
   FRIEND_TEST_ALL_PREFIXES(SpdySessionTest, MetricsCollectionOnPushStreams);
+  FRIEND_TEST_ALL_PREFIXES(SpdySessionTest, CancelPushBeforeClaimed);
+  FRIEND_TEST_ALL_PREFIXES(SpdySessionTest, CancelPushAfterExpired);
   FRIEND_TEST_ALL_PREFIXES(SpdySessionTest, ProtocolNegotiation);
   FRIEND_TEST_ALL_PREFIXES(SpdySessionTest, ClearSettings);
   FRIEND_TEST_ALL_PREFIXES(SpdySessionTest, AdjustRecvWindowSize);
@@ -675,6 +677,10 @@ class NET_EXPORT SpdySession : public BufferedSpdyFramerVisitorInterface,
                            SpdyPriority priority,
                            SpdyHeaderBlock headers);
 
+  // Called when the pushed stream should be cancelled. If the pushed stream is
+  // not claimed and active, sends RST to the server to cancel the stream.
+  void CancelPush(const GURL& url);
+
   // Close the stream pointed to by the given iterator. Note that that
   // stream may hold the last reference to the session.
   void CloseActiveStreamIterator(ActiveStreamMap::iterator it, int status);