Add a SetDoNotFragment() method to DatagramSocket, and call this for

net/socket/websocket_endpoint_lock_manager_unittest.cc

 // Copyright 2014 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/websocket_endpoint_lock_manager.h"
 
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
@@ skipping 71 matching lines @@
   int Write(IOBuffer* buf,
             int buf_len,
             const CompletionCallback& callback) override {
     return ERR_FAILED;
   }
 
   int SetReceiveBufferSize(int32_t size) override { return ERR_FAILED; }
 
   int SetSendBufferSize(int32_t size) override { return ERR_FAILED; }
 
+  int SetDoNotFragment(bool do_not_fragment) override { return ERR_FAILED; }
+
  private:
   BoundNetLog bound_net_log_;
 
   DISALLOW_COPY_AND_ASSIGN(FakeStreamSocket);
 };
 
 class FakeWaiter : public WebSocketEndpointLockManager::Waiter {
  public:
   FakeWaiter() : called_(false) {}
 
@@ skipping 228 matching lines @@
   blocking_waiter.WaitForLock();
   TimeTicks after_unlock = TimeTicks::Now();
   EXPECT_GE(after_unlock - before_unlock, unlock_delay);
   instance()->SetUnlockDelayForTesting(base::TimeDelta());
   UnlockDummyEndpoint(1);
 }
 
 }  // namespace
 
 }  // namespace net