Update legacy Tuple-using code.

chrome/browser/ui/search/instant_search_prerenderer_unittest.cc

Index: chrome/browser/ui/search/instant_search_prerenderer_unittest.cc
diff --git a/chrome/browser/ui/search/instant_search_prerenderer_unittest.cc b/chrome/browser/ui/search/instant_search_prerenderer_unittest.cc
index 7008a6a9d04ff79664b6c5eef45b8bc30d6d15db..f40a2941acd0bfc5780ed705e9208662c13d7c83 100644
--- a/chrome/browser/ui/search/instant_search_prerenderer_unittest.cc
+++ b/chrome/browser/ui/search/instant_search_prerenderer_unittest.cc
@@ -501,12 +501,13 @@ TEST_F(TestUsePrerenderPage, SetEmbeddedSearchRequestParams) {
   ASSERT_TRUE(message);
 
   // Verify the IPC message params.
-  Tuple2<base::string16, EmbeddedSearchRequestParams> params;
+  Tuple<base::string16, EmbeddedSearchRequestParams> params;
   ChromeViewMsg_SearchBoxSubmit::Read(message, &params);
-  EXPECT_EQ("foo", base::UTF16ToASCII(params.a));
-  EXPECT_EQ("f", base::UTF16ToASCII(params.b.original_query));
-  EXPECT_EQ("utf-8", base::UTF16ToASCII(params.b.input_encoding));
-  EXPECT_EQ("", base::UTF16ToASCII(params.b.rlz_parameter_value));
-  EXPECT_EQ("chrome...0", base::UTF16ToASCII(params.b.assisted_query_stats));
+  EXPECT_EQ("foo", base::UTF16ToASCII(get<0>(params)));
+  EXPECT_EQ("f", base::UTF16ToASCII(get<1>(params).original_query));
+  EXPECT_EQ("utf-8", base::UTF16ToASCII(get<1>(params).input_encoding));
+  EXPECT_EQ("", base::UTF16ToASCII(get<1>(params).rlz_parameter_value));
+  EXPECT_EQ("chrome...0",
+            base::UTF16ToASCII(get<1>(params).assisted_query_stats));
 }
 #endif