Convert ToolbarModel::GetEVCertName() from wstring to string16.

chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.mm

 // 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.
 
 #import "chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.h"
 
 #include "base/stl_util.h"
 #include "base/string_util.h"
 #include "base/sys_string_conversions.h"
 #include "base/utf_string_conversions.h"
@@ skipping 602 matching lines @@
     // Switch from location icon to keyword mode.
     location_icon_decoration_->SetVisible(false);
     selected_keyword_decoration_->SetVisible(true);
     selected_keyword_decoration_->SetKeyword(short_name, is_extension_keyword);
     selected_keyword_decoration_->SetImage(GetKeywordImage(keyword));
   } else if (toolbar_model_->GetSecurityLevel() == ToolbarModel::EV_SECURE) {
     // Switch from location icon to show the EV bubble instead.
     location_icon_decoration_->SetVisible(false);
     ev_bubble_decoration_->SetVisible(true);
 
-    std::wstring label(toolbar_model_->GetEVCertName());
-    ev_bubble_decoration_->SetFullLabel(base::SysWideToNSString(label));
+    string16 label(toolbar_model_->GetEVCertName());
+    ev_bubble_decoration_->SetFullLabel(base::SysUTF16ToNSString(label));
   } else if (!keyword.empty() && is_keyword_hint) {
     keyword_hint_decoration_->SetKeyword(short_name,
                                          is_extension_keyword);
     keyword_hint_decoration_->SetVisible(true);
   }
 
   // These need to change anytime the layout changes.
   // TODO(shess): Anytime the field editor might have changed, the
   // cursor rects almost certainly should have changed.  The tooltips
   // might change even when the rects don't change.
   [field_ resetFieldEditorFrameIfNeeded];
   [field_ updateCursorAndToolTipRects];
 
   [field_ setNeedsDisplay:YES];
 }
 
 bool LocationBarViewMac::IsStarEnabled() {
   return [field_ isEditable] &&
          browser_defaults::bookmarks_enabled &&
          !toolbar_model_->input_in_progress() &&
          edit_bookmarks_enabled_.GetValue();
 }