Add base:: to string16 in chrome_frame/.

chrome_frame/find_dialog.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 "chrome_frame/find_dialog.h"
 
 #include <richedit.h>
 
 #include "base/guid.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 17 matching lines @@
   // message that triggers a ViewMsg_StopFinding.
   std::string guid(base::GenerateGUID());
   automation_client_->FindInPage(ASCIIToWide(guid), FWD, CASE_SENSITIVE, false);
 
   UninstallMessageHook();
   return 0;
 }
 
 LRESULT CFFindDialog::OnFind(WORD wNotifyCode, WORD wID, HWND hWndCtl,
                              BOOL& bHandled) {
-  string16 find_text(kMaxFindChars, L'\0');
+  base::string16 find_text(kMaxFindChars, L'\0');
   find_text.resize(GetDlgItemText(IDC_FIND_TEXT, &find_text[0], kMaxFindChars));
 
   // Repeated searches for the same string should move to the next instance.
   bool find_next = (find_text == last_find_text_);
   if (!find_next)
     last_find_text_ = find_text;
 
   bool match_case = IsDlgButtonChecked(IDC_MATCH_CASE) == BST_CHECKED;
   bool search_down = IsDlgButtonChecked(IDC_DIRECTION_DOWN) == BST_CHECKED;
 
@@ skipping 62 matching lines @@
 }
 
 bool CFFindDialog::UninstallMessageHook() {
   DCHECK(msg_hook_ != NULL);
   BOOL result = ::UnhookWindowsHookEx(msg_hook_);
   DCHECK(result);
   msg_hook_ = NULL;
 
   return result != FALSE;
 }