Move the number conversions from string_util to a new file....

chrome/browser/extensions/extension_clipboard_api.cc

 // Copyright (c) 2010 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/extension_clipboard_api.h"
 
-#include "base/string_util.h"
+#include "base/string_number_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/extensions/extension_tabs_module.h"
 #include "chrome/browser/renderer_host/render_view_host.h"
 #include "chrome/browser/tab_contents/tab_contents.h"
 #include "chrome/common/extensions/extension_error_utils.h"
 
 namespace {
 // Errors.
 const char kNoTabError[] = "No tab with id: *.";
 }
 
 bool ClipboardFunction::RunImpl() {
   int tab_id;
   EXTENSION_FUNCTION_VALIDATE(args_->GetInteger(0, &tab_id));
 
   TabContents* contents = NULL;
   if (!ExtensionTabUtil::GetTabById(tab_id, profile(), include_incognito(),
                                     NULL, NULL, &contents, NULL)) {
-    error_ = ExtensionErrorUtils::FormatErrorMessage(kNoTabError,
-                                                     IntToString(tab_id));
+    error_ = ExtensionErrorUtils::FormatErrorMessage(
+        kNoTabError, base::IntToString(tab_id));
     return false;
   }
 
   RenderViewHost* render_view_host = contents->render_view_host();
   if (!render_view_host) {
     return false;
   }
 
   return RunImpl(render_view_host);
 }
 
 bool ExecuteCopyClipboardFunction::RunImpl(RenderViewHost* render_view_host) {
   render_view_host->Copy();
   return true;
 }
 
 bool ExecuteCutClipboardFunction::RunImpl(RenderViewHost* render_view_host) {
   render_view_host->Cut();
   return true;
 }
 
 bool ExecutePasteClipboardFunction::RunImpl(RenderViewHost* render_view_host) {
   render_view_host->Paste();
   return true;
 }