Add a new GetNegotiatedProtocol method to StreamSocket and implement in all subclasses.

net/socket/client_socket_pool_base_unittest.cc

 // 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.
 
 #include "net/socket/client_socket_pool_base.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/compiler_specific.h"
@@ skipping 85 matching lines @@
   virtual bool WasEverUsed() const {
     return was_used_to_convey_data_ || num_bytes_read_ > 0;
   }
   virtual bool UsingTCPFastOpen() const { return false; }
   virtual int64 NumBytesRead() const { return num_bytes_read_; }
   virtual base::TimeDelta GetConnectTimeMicros() const {
     static const base::TimeDelta kDummyConnectTimeMicros =
         base::TimeDelta::FromMicroseconds(10);
     return kDummyConnectTimeMicros;  // Dummy value.
   }
+  virtual NextProto GetNegotiatedProtocol() const {
+    return kProtoUnknown;
+  }
 
  private:
   bool connected_;
   BoundNetLog net_log_;
   bool was_used_to_convey_data_;
   int num_bytes_read_;
 
   DISALLOW_COPY_AND_ASSIGN(MockClientSocket);
 };
 
@@ skipping 3245 matching lines @@
   // The hung connect job should still be there, but everything else should be
   // complete.
   EXPECT_EQ(1, pool_->NumConnectJobsInGroup("a"));
   EXPECT_EQ(0, pool_->IdleSocketCountInGroup("a"));
   EXPECT_EQ(1, pool_->NumActiveSocketsInGroup("a"));
 }
 
 }  // namespace
 
 }  // namespace net