Use base namespace for string16 in components and cloud_print.

components/breakpad/app/hard_error_handler_win.cc

 // Copyright 2013 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 "components/breakpad/app/hard_error_handler_win.h"
 
 #if defined(_WIN32_WINNT_WIN8) && _MSC_VER < 1700
 // The Windows 8 SDK defines FACILITY_VISUALCPP in winerror.h, and in
 // delayimp.h previous to VS2012.
 #undef FACILITY_VISUALCPP
@@ skipping 39 matching lines @@
       ntdll,
       nt_status,
       MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
       reinterpret_cast<wchar_t*>(&msg_template),
       0,
       NULL);
 
   if (!count)
     return;
   count += p1.size() + p2.size() + 1;
-  string16 message;
+  base::string16 message;
   ::wsprintf(WriteInto(&message, count), msg_template, p1.c_str(), p2.c_str());
   // The MB_SERVICE_NOTIFICATION causes this message to be displayed by
   // csrss. This means that we are not creating windows or pumping WM messages
   // in this process.
   ::MessageBox(NULL, message.c_str(),
                L"chrome.exe",
                MB_OK | MB_SERVICE_NOTIFICATION);
   ::LocalFree(msg_template);
 }
 
@@ skipping 38 matching lines @@
     RaiseHardErrorMsg(exception, std::string(), std::string());
     return true;
 #else
     return false;
 #endif
   }
   return false;
 }
 
 }  // namespace breakpad