Update from https://crrev.com/316786

net/http/http_cache_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/http/http_cache.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 3151 matching lines @@
   transaction.url = kRangeGET_TransactionOK.url;
   transaction.method = "HEAD";
   transaction.data = "";
   AddMockTransaction(&transaction);
   std::string headers;
 
   // Load from cache.
   RunTransactionTestWithResponse(cache.http_cache(), transaction, &headers);
 
   EXPECT_NE(std::string::npos, headers.find("HTTP/1.1 200 OK\n"));
-  EXPECT_EQ(std::string::npos, headers.find("Content-Length"));
+  EXPECT_NE(std::string::npos, headers.find("Content-Length: 80\n"));
   EXPECT_EQ(std::string::npos, headers.find("Content-Range"));
   EXPECT_EQ(1, cache.network_layer()->transaction_count());
   EXPECT_EQ(1, cache.disk_cache()->open_count());
   EXPECT_EQ(1, cache.disk_cache()->create_count());
   RemoveMockTransaction(&transaction);
 }
 
 // Tests that a HEAD request can be served from a truncated resource.
 TEST(HttpCache, SimpleHEAD_WithTruncatedEntry) {
   MockHttpCache cache;
@@ skipping 4586 matching lines @@
 
   // Here the second transaction proceeds without reading the first body.
   EXPECT_EQ(net::LOAD_STATE_WAITING_FOR_CACHE, second->trans->GetLoadState());
   base::MessageLoop::current()->RunUntilIdle();
   EXPECT_EQ(net::LOAD_STATE_IDLE, second->trans->GetLoadState());
   ASSERT_TRUE(second->trans->GetResponseInfo());
   EXPECT_TRUE(second->trans->GetResponseInfo()->headers->HasHeaderValue(
       "Cache-Control", "no-store"));
   ReadAndVerifyTransaction(second->trans.get(), kSimpleGET_Transaction);
 }