Update from https://crrev.com/333737

base/tuple_unittest.cc

 // Copyright (c) 2006-2008 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 "base/tuple.h"
 
 #include "base/compiler_specific.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+namespace base {
+
 namespace {
 
 void DoAdd(int a, int b, int c, int* res) {
   *res = a + b + c;
 }
 
 struct Addy {
   Addy() { }
   void DoAdd(int a, int b, int c, int d, int* res) {
     *res = a + b + c + d;
   }
 };
 
 struct Addz {
   Addz() { }
   void DoAdd(int a, int b, int c, int d, int e, int* res) {
     *res = a + b + c + d + e;
   }
 };
 
 }  // namespace
 
 TEST(TupleTest, Basic) {
-  Tuple<> t0 = MakeTuple();
+  base::Tuple<> t0 = base::MakeTuple();
   ALLOW_UNUSED_LOCAL(t0);
-  Tuple<int> t1(1);
-  Tuple<int, const char*> t2 = MakeTuple(1, static_cast<const char*>("wee"));
-  Tuple<int, int, int> t3(1, 2, 3);
-  Tuple<int, int, int, int*> t4(1, 2, 3, &get<0>(t1));
-  Tuple<int, int, int, int, int*> t5(1, 2, 3, 4, &get<0>(t4));
-  Tuple<int, int, int, int, int, int*> t6(1, 2, 3, 4, 5, &get<0>(t4));
+  base::Tuple<int> t1(1);
+  base::Tuple<int, const char*> t2 =
+      base::MakeTuple(1, static_cast<const char*>("wee"));
+  base::Tuple<int, int, int> t3(1, 2, 3);
+  base::Tuple<int, int, int, int*> t4(1, 2, 3, &get<0>(t1));
+  base::Tuple<int, int, int, int, int*> t5(1, 2, 3, 4, &get<0>(t4));
+  base::Tuple<int, int, int, int, int, int*> t6(1, 2, 3, 4, 5, &get<0>(t4));
 
   EXPECT_EQ(1, get<0>(t1));
   EXPECT_EQ(1, get<0>(t2));
   EXPECT_EQ(1, get<0>(t3));
   EXPECT_EQ(2, get<1>(t3));
   EXPECT_EQ(3, get<2>(t3));
   EXPECT_EQ(1, get<0>(t4));
   EXPECT_EQ(2, get<1>(t4));
   EXPECT_EQ(3, get<2>(t4));
   EXPECT_EQ(1, get<0>(t5));
   EXPECT_EQ(2, get<1>(t5));
   EXPECT_EQ(3, get<2>(t5));
   EXPECT_EQ(4, get<3>(t5));
   EXPECT_EQ(1, get<0>(t6));
   EXPECT_EQ(2, get<1>(t6));
   EXPECT_EQ(3, get<2>(t6));
   EXPECT_EQ(4, get<3>(t6));
   EXPECT_EQ(5, get<4>(t6));
 
   EXPECT_EQ(1, get<0>(t1));
   DispatchToFunction(&DoAdd, t4);
   EXPECT_EQ(6, get<0>(t1));
 
   int res = 0;
-  DispatchToFunction(&DoAdd, MakeTuple(9, 8, 7, &res));
+  DispatchToFunction(&DoAdd, base::MakeTuple(9, 8, 7, &res));
   EXPECT_EQ(24, res);
 
   Addy addy;
   EXPECT_EQ(1, get<0>(t4));
   DispatchToMethod(&addy, &Addy::DoAdd, t5);
   EXPECT_EQ(10, get<0>(t4));
 
   Addz addz;
   EXPECT_EQ(10, get<0>(t4));
   DispatchToMethod(&addz, &Addz::DoAdd, t6);
@@ skipping 25 matching lines @@
 }  // namespace
 
 TEST(TupleTest, Copying) {
   CopyLogger logger;
   EXPECT_EQ(0, CopyLogger::TimesCopied);
   EXPECT_EQ(1, CopyLogger::TimesConstructed);
 
   bool res = false;
 
   // Creating the tuple should copy the class to store internally in the tuple.
-  Tuple<CopyLogger, CopyLogger*, bool*> tuple(logger, &logger, &res);
+  base::Tuple<CopyLogger, CopyLogger*, bool*> tuple(logger, &logger, &res);
   get<1>(tuple) = &get<0>(tuple);
   EXPECT_EQ(2, CopyLogger::TimesConstructed);
   EXPECT_EQ(1, CopyLogger::TimesCopied);
 
   // Our internal Logger and the one passed to the function should be the same.
   res = false;
   DispatchToFunction(&SomeLoggerMethRef, tuple);
   EXPECT_TRUE(res);
   EXPECT_EQ(2, CopyLogger::TimesConstructed);
   EXPECT_EQ(1, CopyLogger::TimesCopied);
 
   // Now they should be different, since the function call will make a copy.
   res = false;
   DispatchToFunction(&SomeLoggerMethCopy, tuple);
   EXPECT_FALSE(res);
   EXPECT_EQ(3, CopyLogger::TimesConstructed);
   EXPECT_EQ(2, CopyLogger::TimesCopied);
 }
+
+}  // namespace base