browser tests: Fix a new[]/delete mismatch found by PVS Studio.

chrome/browser/accessibility/accessibility_win_browsertest.cc

 // Copyright (c) 2011 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 <atlbase.h>
 #include <vector>
 
+#include "base/memory/scoped_ptr.h"
 #include "base/win/scoped_comptr.h"
 #include "chrome/browser/automation/ui_controls.h"
 #include "chrome/browser/renderer_host/render_widget_host_view_win.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/test/in_process_browser_test.h"
 #include "chrome/test/ui_test_utils.h"
 #include "content/browser/renderer_host/render_view_host.h"
 #include "content/browser/tab_contents/tab_contents.h"
 #include "content/common/notification_type.h"
@@ skipping 143 matching lines @@
         break;
       }
     }
 
     LONG child_count;
     hr = accessible->get_accChildCount(&child_count);
     ASSERT_EQ(S_OK, hr);
     if (child_count == 0)
       continue;
 
-    auto_ptr<VARIANT> child_array(new VARIANT[child_count]);
+    scoped_array<VARIANT> child_array(new VARIANT[child_count]);
     LONG obtained_count = 0;
     hr = AccessibleChildren(
         accessible, 0, child_count, child_array.get(), &obtained_count);
     ASSERT_EQ(S_OK, hr);
     ASSERT_EQ(child_count, obtained_count);
 
     for (int index = 0; index < obtained_count; index++) {
       base::win::ScopedComPtr<IAccessible> child_accessible(
         GetAccessibleFromResultVariant(accessible, &child_array.get()[index]));
       if (child_accessible.get()) {
@@ skipping 528 matching lines @@
   ASSERT_EQ(S_OK, hr);
   hr = checkbox_isimpledomnode->get_nodeInfo(
       &node_name, &name_space_id, &node_value, &num_children, &unique_id,
       &node_type);
   ASSERT_EQ(S_OK, hr);
   EXPECT_STREQ(L"input", wstring(node_name, SysStringLen(node_name)).c_str());
   EXPECT_EQ(NODETYPE_ELEMENT, node_type);
   EXPECT_EQ(0, num_children);
 }
 }  // namespace.