Cleanup: Remove unneeded browser_thread.h usage.

chrome/browser/net/load_timing_observer_unittest.cc

 // Copyright (c) 2010 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 "chrome/browser/net/load_timing_observer.h"
 
 #include "base/compiler_specific.h"
 #include "base/format_macros.h"
 #include "base/string_util.h"
 #include "base/time.h"
+#include "chrome/browser/browser_thread.h"
 #include "net/base/load_flags.h"
 #include "net/url_request/url_request_netlog_params.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace {
 
 using net::NetLog;
 using base::TimeDelta;
 
 // Serves to Identify the current thread as the IO thread.
@@ skipping 303 matching lines @@
   AddStartEntry(observer,
                 source,
                 NetLog::TYPE_SOCKET_POOL_BOUND_TO_SOCKET,
                 params.get());
 
   LoadTimingObserver::URLRequestRecord* record =
       observer.GetURLRequestRecord(0);
   ASSERT_EQ(1000, record->timing.ssl_start);
   ASSERT_EQ(3000, record->timing.ssl_end);
 }