Cleanup various includes and namespace references.

net/quic/quic_sent_entropy_manager_test.cc

 // Copyright 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/quic/quic_sent_entropy_manager.h"
 
 #include <algorithm>
-#include <vector>
 
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using std::make_pair;
 using std::pair;
-using std::vector;
 
 namespace net {
 namespace test {
 namespace {
 
 class QuicSentEntropyManagerTest : public ::testing::Test {
  protected:
   QuicSentEntropyManager entropy_manager_;
 };
 
@@ skipping 64 matching lines @@
   entropy_hash = 0;
   for (size_t i = 0; i < arraysize(entropies); ++i) {
     entropy_hash ^= entropies[i];
   }
   EXPECT_EQ(entropy_hash, entropy_manager_.GetCumulativeEntropy(10));
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace net