Update legacy Tuple-using code.

components/password_manager/content/renderer/credential_manager_client_browsertest.cc

 // Copyright 2014 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 "components/password_manager/content/common/credential_manager_messages.h"
 #include "components/password_manager/content/renderer/credential_manager_client.h"
 #include "content/public/test/render_view_test.h"
 #include "ipc/ipc_test_sink.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/WebKit/public/platform/WebCredential.h"
@@ skipping 34 matching lines @@
   //
   // Clears any pending messages upon return.
   bool ExtractRequestId(uint32 message_id, int& request_id) {
     request_id = -1;
     const IPC::Message* message = sink().GetFirstMessageMatching(message_id);
     if (!message)
       return false;
 
     switch (message_id) {
       case CredentialManagerHostMsg_NotifyFailedSignIn::ID: {
-        Tuple2<int, CredentialInfo> param;
+        Tuple<int, CredentialInfo> param;
         CredentialManagerHostMsg_NotifyFailedSignIn::Read(message, &param);
-        request_id = param.a;
+        request_id = get<0>(param);
         break;
       }
 
       case CredentialManagerHostMsg_NotifySignedIn::ID: {
-        Tuple2<int, CredentialInfo> param;
+        Tuple<int, CredentialInfo> param;
         CredentialManagerHostMsg_NotifySignedIn::Read(message, &param);
-        request_id = param.a;
+        request_id = get<0>(param);
         break;
       }
 
       case CredentialManagerHostMsg_NotifySignedOut::ID: {
-        Tuple1<int> param;
+        Tuple<int> param;
         CredentialManagerHostMsg_NotifySignedOut::Read(message, &param);
-        request_id = param.a;
+        request_id = get<0>(param);
         break;
       }
 
       case CredentialManagerHostMsg_RequestCredential::ID: {
-        Tuple3<int, bool, std::vector<GURL> > param;
+        Tuple<int, bool, std::vector<GURL> > param;
         CredentialManagerHostMsg_RequestCredential::Read(message, &param);
-        request_id = param.a;
+        request_id = get<0>(param);
         break;
       }
 
       default:
         break;
     }
     sink().ClearMessages();
     return request_id != -1;
   }
 
@@ skipping 138 matching lines @@
   EXPECT_TRUE(ExtractRequestId(CredentialManagerHostMsg_RequestCredential::ID,
                                request_id));
 
   CredentialInfo info; // Send an empty credential in response.
   client_->OnSendCredential(request_id, info);
   EXPECT_TRUE(callback_succeeded());
   EXPECT_FALSE(callback_errored());
 }
 
 }  // namespace password_manager