Improve memory estimate of SpdySessionPool in net/ MemoryDumpProvider.

net/spdy/spdy_protocol.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.
 
 // This file contains some protocol structures for use with SPDY 3 and HTTP 2
 // The SPDY 3 spec can be found at:
 // http://dev.chromium.org/spdy/spdy-protocol/spdy-protocol-draft3
 
 #ifndef NET_SPDY_SPDY_PROTOCOL_H_
 #define NET_SPDY_SPDY_PROTOCOL_H_
@@ skipping 844 matching lines @@
       owns_buffer_ = false;
     } else {
       // Otherwise, we need to make a copy to give to the caller.
       buffer = new char[size_];
       memcpy(buffer, frame_, size_);
     }
     *this = SpdySerializedFrame();
     return buffer;
   }
 
+  // Returns the estimate of dynamically allocated memory in bytes.
+  size_t EstimateMemoryUsage() const { return owns_buffer_ ? size_ : 0; }
+
  protected:
   char* frame_;
 
  private:
   size_t size_;
   bool owns_buffer_;
   DISALLOW_COPY_AND_ASSIGN(SpdySerializedFrame);
 };
 
 // This interface is for classes that want to process SpdyFrameIRs without
@@ skipping 19 matching lines @@
   SpdyFrameVisitor() {}
   virtual ~SpdyFrameVisitor() {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(SpdyFrameVisitor);
 };
 
 }  // namespace net
 
 #endif  // NET_SPDY_SPDY_PROTOCOL_H_