Update legacy Tuple-using code.

components/autofill/content/browser/content_autofill_driver_unittest.cc

Index: components/autofill/content/browser/content_autofill_driver_unittest.cc
diff --git a/components/autofill/content/browser/content_autofill_driver_unittest.cc b/components/autofill/content/browser/content_autofill_driver_unittest.cc
index ffbee128120c67d276711d518461af7f9dba2a61..0ade6e6a63c44b14e40fea0403160e2d35294400 100644
--- a/components/autofill/content/browser/content_autofill_driver_unittest.cc
+++ b/components/autofill/content/browser/content_autofill_driver_unittest.cc
@@ -91,13 +91,13 @@ class ContentAutofillDriverTest : public content::RenderViewHostTestHarness {
         process()->sink().GetFirstMessageMatching(kMsgID);
     if (!message)
       return false;
-    Tuple2<int, FormData> autofill_param;
+    Tuple<int, FormData> autofill_param;
     if (!AutofillMsg_FillForm::Read(message, &autofill_param))
       return false;
     if (page_id)
-      *page_id = autofill_param.a;
+      *page_id = get<0>(autofill_param);
     if (results)
-      *results = autofill_param.b;
+      *results = get<1>(autofill_param);
     process()->sink().ClearMessages();
     return true;
   }
@@ -112,13 +112,13 @@ class ContentAutofillDriverTest : public content::RenderViewHostTestHarness {
         process()->sink().GetFirstMessageMatching(kMsgID);
     if (!message)
       return false;
-    Tuple2<int, FormData> autofill_param;
+    Tuple<int, FormData> autofill_param;
     if (!AutofillMsg_PreviewForm::Read(message, &autofill_param))
       return false;
     if (page_id)
-      *page_id = autofill_param.a;
+      *page_id = get<0>(autofill_param);
     if (results)
-      *results = autofill_param.b;
+      *results = get<1>(autofill_param);
     process()->sink().ClearMessages();
     return true;
   }
@@ -135,12 +135,12 @@ class ContentAutofillDriverTest : public content::RenderViewHostTestHarness {
         process()->sink().GetFirstMessageMatching(kMsgID);
     if (!message)
       return false;
-    Tuple1<std::vector<FormDataPredictions> > autofill_param;
+    Tuple<std::vector<FormDataPredictions> > autofill_param;
     if (!AutofillMsg_FieldTypePredictionsAvailable::Read(message,
                                                          &autofill_param))
       return false;
     if (predictions)
-      *predictions = autofill_param.a;
+      *predictions = get<0>(autofill_param);
 
     process()->sink().ClearMessages();
     return true;
@@ -155,7 +155,7 @@ class ContentAutofillDriverTest : public content::RenderViewHostTestHarness {
         process()->sink().GetFirstMessageMatching(messageID);
     if (!message)
       return false;
-    Tuple1<base::string16> autofill_param;
+    Tuple<base::string16> autofill_param;
     switch (messageID) {
       case AutofillMsg_FillFieldWithValue::ID:
         if (!AutofillMsg_FillFieldWithValue::Read(message, &autofill_param))
@@ -174,7 +174,7 @@ class ContentAutofillDriverTest : public content::RenderViewHostTestHarness {
         NOTREACHED();
     }
     if (value)
-      *value = autofill_param.a;
+      *value = get<0>(autofill_param);
     process()->sink().ClearMessages();
     return true;
   }