Deprecate FLAGS_quic_enable_arena_allocation.

net/quic/quic_one_block_arena_test.cc

 // Copyright (c) 2016 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_one_block_arena.h"
 
 #include "net/quic/interval_set.h"
 #include "net/quic/quic_flags.h"
 #include "net/quic/quic_utils.h"
 #include "net/test/gtest_util.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace net {
 namespace {
 
 static const uint32_t kMaxAlign = 8;
 
 struct TestObject {
   uint32_t value;
 };
 
 TEST(QuicOneBlockArenaTest, AllocateSuccess) {
-  FLAGS_quic_enable_arena_allocation = true;
   QuicOneBlockArena<1024> arena;
   QuicArenaScopedPtr<TestObject> ptr = arena.New<TestObject>();
   EXPECT_TRUE(ptr.is_from_arena());
 }
 
-TEST(QuicOneBlockArenaTest, Disabled) {
-  FLAGS_quic_enable_arena_allocation = false;
-  QuicOneBlockArena<1024> arena;
-  QuicArenaScopedPtr<TestObject> ptr = arena.New<TestObject>();
-  EXPECT_FALSE(ptr.is_from_arena());
-}
-
 TEST(QuicOneBlockArenaTest, Exhaust) {
-  FLAGS_quic_enable_arena_allocation = true;
   QuicOneBlockArena<1024> arena;
   for (size_t i = 0; i < 1024 / kMaxAlign; ++i) {
     QuicArenaScopedPtr<TestObject> ptr = arena.New<TestObject>();
     EXPECT_TRUE(ptr.is_from_arena());
   }
   QuicArenaScopedPtr<TestObject> ptr;
   EXPECT_DFATAL(ptr = arena.New<TestObject>(),
                 "Ran out of space in QuicOneBlockArena");
   EXPECT_FALSE(ptr.is_from_arena());
 }
 
 TEST(QuicOneBlockArenaTest, NoOverlaps) {
-  FLAGS_quic_enable_arena_allocation = true;
   QuicOneBlockArena<1024> arena;
   std::vector<QuicArenaScopedPtr<TestObject>> objects;
   IntervalSet<uintptr_t> used;
   for (size_t i = 0; i < 1024 / kMaxAlign; ++i) {
     QuicArenaScopedPtr<TestObject> ptr = arena.New<TestObject>();
     EXPECT_TRUE(ptr.is_from_arena());
 
     uintptr_t begin = reinterpret_cast<uintptr_t>(ptr.get());
     uintptr_t end = begin + sizeof(TestObject);
     EXPECT_FALSE(used.Contains(begin));
     EXPECT_FALSE(used.Contains(end - 1));
     used.Add(begin, end);
   }
 }
 
 }  // namespace
 }  // namespace net