Improve memory estimate of SpdySessionPool in net/ MemoryDumpProvider.

net/spdy/spdy_write_queue_unittest.cc

 // Copyright (c) 2013 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.
 
 #include "net/spdy/spdy_write_queue.h"
 
 #include <cstddef>
 #include <cstring>
 #include <memory>
 #include <string>
 #include <utility>
 
+#include "base/logging.h"
 #include "base/memory/ref_counted.h"
 #include "base/strings/string_number_conversions.h"
 #include "net/base/request_priority.h"
 #include "net/log/net_log_with_source.h"
 #include "net/spdy/spdy_buffer_producer.h"
 #include "net/spdy/spdy_stream.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "url/gurl.h"
 
 namespace net {
@@ skipping 31 matching lines @@
   RequeingBufferProducer(SpdyWriteQueue* queue) {
     buffer_.reset(new SpdyBuffer(kOriginal, arraysize(kOriginal)));
     buffer_->AddConsumeCallback(
         base::Bind(RequeingBufferProducer::ConsumeCallback, queue));
   }
 
   std::unique_ptr<SpdyBuffer> ProduceBuffer() override {
     return std::move(buffer_);
   }
 
+  size_t EstimateMemoryUsage() const override {
+    NOTREACHED();
+    return 0;
+  }
+
   static void ConsumeCallback(SpdyWriteQueue* queue,
                               size_t size,
                               SpdyBuffer::ConsumeSource source) {
     std::unique_ptr<SpdyBufferProducer> producer(
         new SimpleBufferProducer(std::unique_ptr<SpdyBuffer>(
             new SpdyBuffer(kRequeued, arraysize(kRequeued)))));
 
     queue->Enqueue(MEDIUM, RST_STREAM, std::move(producer),
                    base::WeakPtr<SpdyStream>());
   }
@@ skipping 287 matching lines @@
   std::unique_ptr<SpdyBufferProducer> producer;
   base::WeakPtr<SpdyStream> weak_stream;
 
   EXPECT_TRUE(queue.Dequeue(&frame_type, &producer, &weak_stream));
   EXPECT_EQ(string(kRequeued), producer->ProduceBuffer()->GetRemainingData());
 }
 
 }  // namespace
 
 }  // namespace net