Replace base::Tuple in //chrome with std::tuple

chrome/browser/search/instant_service_unittest.cc

Index: chrome/browser/search/instant_service_unittest.cc
diff --git a/chrome/browser/search/instant_service_unittest.cc b/chrome/browser/search/instant_service_unittest.cc
index e2836f39a3d1adf79cc1088017ddca592ae91275..7bac41161374a033f36ee1f60b42bb973601195a 100644
--- a/chrome/browser/search/instant_service_unittest.cc
+++ b/chrome/browser/search/instant_service_unittest.cc
@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 
 #include <string>
+#include <tuple>
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
@@ -112,8 +113,8 @@ TEST_F(InstantServiceEnabledTest, SendsSearchURLsToRenderer) {
   ASSERT_TRUE(msg);
   ChromeViewMsg_SetSearchURLs::Param params;
   ChromeViewMsg_SetSearchURLs::Read(msg, &params);
-  std::vector<GURL> search_urls = base::get<0>(params);
-  GURL new_tab_page_url = base::get<1>(params);
+  std::vector<GURL> search_urls = std::get<0>(params);
+  GURL new_tab_page_url = std::get<1>(params);
   EXPECT_EQ(2U, search_urls.size());
   EXPECT_EQ("https://www.google.com/alt#quux=", search_urls[0].spec());
   EXPECT_EQ("https://www.google.com/url?bar=", search_urls[1].spec());