Convert std::wstring encoding names to std::string in a bunch of files.

chrome/browser/tab_contents/tab_contents.cc

 // Copyright (c) 2009 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/tab_contents/tab_contents.h"
 
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
 #include "base/file_version_info.h"
 #include "base/process_util.h"
@@ skipping 1990 matching lines @@
                                                             page_id);
   if (!entry || !UpdateTitleForEntry(entry, title))
     return;
 
   // Broadcast notifications when the UI should be updated.
   if (entry == controller_.GetEntryAtOffset(0))
     NotifyNavigationStateChanged(INVALIDATE_TAB);
 }
 
 void TabContents::UpdateEncoding(RenderViewHost* render_view_host,
-                                 const std::wstring& encoding) {
+                                 const std::string& encoding) {
   set_encoding(encoding);
 }
 
 void TabContents::UpdateTargetURL(int32 page_id, const GURL& url) {
   if (delegate())
     delegate()->UpdateTargetURL(this, url);
 }
 
 void TabContents::UpdateThumbnail(const GURL& url,
                                   const SkBitmap& bitmap,
@@ skipping 467 matching lines @@
       render_view_host()->SyncRendererPrefs();
       break;
     }
 #endif
 
     default:
       NOTREACHED();
   }
 }
 
-void TabContents::set_encoding(const std::wstring& encoding) {
+void TabContents::set_encoding(const std::string& encoding) {
   encoding_ = CharacterEncoding::GetCanonicalEncodingNameByAliasName(encoding);
 }