Move WriteInto to base namespace.

ui/gfx/win/hwnd_util.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 "ui/gfx/win/hwnd_util.h"
 
 #include "base/i18n/rtl.h"
 #include "base/strings/string_util.h"
 #include "base/tracked_objects.h"
 #include "base/win/metro.h"
@@ skipping 61 matching lines @@
 }  // namespace
 
 base::string16 GetClassName(HWND window) {
   // GetClassNameW will return a truncated result (properly null terminated) if
   // the given buffer is not large enough.  So, it is not possible to determine
   // that we got the entire class name if the result is exactly equal to the
   // size of the buffer minus one.
   DWORD buffer_size = MAX_PATH;
   while (true) {
     std::wstring output;
-    DWORD size_ret =
-        GetClassNameW(window, WriteInto(&output, buffer_size), buffer_size);
+    DWORD size_ret = GetClassNameW(
+        window, base::WriteInto(&output, buffer_size), buffer_size);
     if (size_ret == 0)
       break;
     if (size_ret < (buffer_size - 1)) {
       output.resize(size_ret);
       return output;
     }
     buffer_size *= 2;
   }
   return std::wstring();  // error
 }
@@ skipping 150 matching lines @@
   HMODULE metro = base::win::GetMetroModule();
   if (!metro)
     return get_real_hwnd ? ::GetDesktopWindow() : HWND_DESKTOP;
   // In windows 8 metro-mode the root window is not the desktop.
   RootWindow root_window =
       reinterpret_cast<RootWindow>(::GetProcAddress(metro, "GetRootWindow"));
   return root_window();
 }
 
 }  // namespace gfx