Update uses of UTF conversions in content/ to use the base:: namespace.

content/browser/accessibility/browser_accessibility_win_unittest.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 "base/memory/scoped_ptr.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/win/scoped_bstr.h"
 #include "base/win/scoped_comptr.h"
 #include "base/win/scoped_variant.h"
 #include "content/browser/accessibility/browser_accessibility_manager.h"
@@ skipping 531 matching lines @@
       manager->GetRoot()->ToBrowserAccessibilityWin();
 
   long text_len;
   ASSERT_EQ(S_OK, root_obj->get_nCharacters(&text_len));
 
   base::win::ScopedBstr text;
   ASSERT_EQ(S_OK, root_obj->get_text(0, text_len, text.Receive()));
   const std::string embed = base::UTF16ToUTF8(
       BrowserAccessibilityWin::kEmbeddedCharacter);
   EXPECT_EQ(text1_name + embed + text2_name + embed,
-            UTF16ToUTF8(base::string16(text)));
+            base::UTF16ToUTF8(base::string16(text)));
   text.Reset();
 
   long hyperlink_count;
   ASSERT_EQ(S_OK, root_obj->get_nHyperlinks(&hyperlink_count));
   EXPECT_EQ(2, hyperlink_count);
 
   base::win::ScopedComPtr<IAccessibleHyperlink> hyperlink;
   base::win::ScopedComPtr<IAccessibleText> hypertext;
   EXPECT_EQ(E_INVALIDARG, root_obj->get_hyperlink(-1, hyperlink.Receive()));
   EXPECT_EQ(E_INVALIDARG, root_obj->get_hyperlink(2, hyperlink.Receive()));
@@ skipping 162 matching lines @@
   new_parent_hwnd = manager->parent_hwnd();
   ASSERT_FALSE(NULL == new_parent_hwnd);
 
   // This time, destroy the manager first, make sure the AccessibleHWND doesn't
   // crash on destruction (to be caught by SyzyASAN or other tools).
   manager.reset(NULL);
 }
 #endif
 
 }  // namespace content