Update legacy Tuple-using code.

chrome/browser/extensions/sandboxed_unpacker.cc

 // Copyright (c) 2012 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 "chrome/browser/extensions/sandboxed_unpacker.h"
 
 #include <set>
 
 #include "base/base64.h"
 #include "base/bind.h"
@@ skipping 694 matching lines @@
     if (BrowserThread::GetBlockingPool()->IsShutdownInProgress()) {
       // Abort package installation if shutdown was initiated, crbug.com/235525
       ReportFailure(
           ABORTED_DUE_TO_SHUTDOWN,
           l10n_util::GetStringFUTF16(
               IDS_EXTENSION_PACKAGE_INSTALL_ERROR,
               ASCIIToUTF16("ABORTED_DUE_TO_SHUTDOWN")));
       return false;
     }
 
-    const SkBitmap& image = images[i].a;
-    base::FilePath path_suffix = images[i].b;
+    const SkBitmap& image = get<0>(images[i]);
+    base::FilePath path_suffix = get<1>(images[i]);
     if (path_suffix.MaybeAsASCII() == install_icon_path)
       *install_icon = image;
 
     if (path_suffix.IsAbsolute() || path_suffix.ReferencesParent()) {
       // Invalid path for bitmap image.
       ReportFailure(
           INVALID_PATH_FOR_BITMAP_IMAGE,
           l10n_util::GetStringFUTF16(
               IDS_EXTENSION_PACKAGE_INSTALL_ERROR,
               ASCIIToUTF16("INVALID_PATH_FOR_BITMAP_IMAGE")));
@@ skipping 104 matching lines @@
 
 void SandboxedUnpacker::Cleanup() {
   DCHECK(unpacker_io_task_runner_->RunsTasksOnCurrentThread());
   if (!temp_dir_.Delete()) {
     LOG(WARNING) << "Can not delete temp directory at "
                  << temp_dir_.path().value();
   }
 }
 
 }  // namespace extensions