Server push cancellation: add metrics collection for

net/spdy/spdy_session.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_SPDY_SPDY_SESSION_H_
 #define NET_SPDY_SPDY_SESSION_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 554 matching lines @@
   friend class SpdyNetworkTransactionTest;
   friend class SpdyProxyClientSocketTest;
   friend class SpdySessionTest;
   friend class SpdyStreamRequest;
 
   // Allow tests to access our innards for testing purposes.
   FRIEND_TEST_ALL_PREFIXES(SpdySessionTest, ClientPing);
   FRIEND_TEST_ALL_PREFIXES(SpdySessionTest, FailedPing);
   FRIEND_TEST_ALL_PREFIXES(SpdySessionTest, GetActivePushStream);
   FRIEND_TEST_ALL_PREFIXES(SpdySessionTest, DeleteExpiredPushStreams);
+  FRIEND_TEST_ALL_PREFIXES(SpdySessionTest, MetricsCollectionOnPushStreams);
   FRIEND_TEST_ALL_PREFIXES(SpdySessionTest, ProtocolNegotiation);
   FRIEND_TEST_ALL_PREFIXES(SpdySessionTest, ClearSettings);
   FRIEND_TEST_ALL_PREFIXES(SpdySessionTest, AdjustRecvWindowSize);
   FRIEND_TEST_ALL_PREFIXES(SpdySessionTest, AdjustSendWindowSize);
   FRIEND_TEST_ALL_PREFIXES(SpdySessionTest, SessionFlowControlInactiveStream);
   FRIEND_TEST_ALL_PREFIXES(SpdySessionTest, SessionFlowControlPadding);
   FRIEND_TEST_ALL_PREFIXES(SpdySessionTest,
                            SessionFlowControlTooMuchDataTwoDataFrames);
   FRIEND_TEST_ALL_PREFIXES(SpdySessionTest,
                            StreamFlowControlTooMuchDataTwoDataFrames);
@@ skipping 459 matching lines @@
   // Number of pushed streams. All active streams are stored in
   // |active_streams_|, but it's better to know the number of push streams
   // without traversing the whole collection.
   size_t num_pushed_streams_;
 
   // Number of active pushed streams in |active_streams_|, i.e. not in reserved
   // remote state. Streams in reserved state are not counted towards any
   // concurrency limits.
   size_t num_active_pushed_streams_;
 
+  // Number of bytes that has been pushed by the server.
+  uint64_t bytes_pushed_count_;
+
+  // Number of bytes that has been pushed by the server but never claimed.
+  uint64_t bytes_pushed_and_unclaimed_count_;
+
   // The write queue.
   SpdyWriteQueue write_queue_;
 
   // Data for the frame we are currently sending.
 
   // The buffer we're currently writing.
   std::unique_ptr<SpdyBuffer> in_flight_write_;
   // The type of the frame in |in_flight_write_|.
   SpdyFrameType in_flight_write_frame_type_;
   // The size of the frame in |in_flight_write_|.
@@ skipping 136 matching lines @@
   // Used for posting asynchronous IO tasks.  We use this even though
   // SpdySession is refcounted because we don't need to keep the SpdySession
   // alive if the last reference is within a RunnableMethod.  Just revoke the
   // method.
   base::WeakPtrFactory<SpdySession> weak_factory_;
 };
 
 }  // namespace net
 
 #endif  // NET_SPDY_SPDY_SESSION_H_