Prefix string16 with base:: in ui/.

ui/gfx/win/hwnd_util.h

 // 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.
 
 #ifndef UI_GFX_WIN_HWND_UTIL_H_
 #define UI_GFX_WIN_HWND_UTIL_H_
 
 #include <windows.h>
 
 #include "base/strings/string16.h"
 #include "ui/gfx/gfx_export.h"
 
 namespace gfx {
 class Point;
 class Size;
 
 // A version of the GetClassNameW API that returns the class name in an
-// string16. An empty result indicates a failure to get the class name.
-GFX_EXPORT string16 GetClassName(HWND hwnd);
+// base::string16. An empty result indicates a failure to get the class name.
+GFX_EXPORT base::string16 GetClassName(HWND hwnd);
 
 // Useful for subclassing a HWND.  Returns the previous window procedure.
 GFX_EXPORT WNDPROC SetWindowProc(HWND hwnd, WNDPROC wndproc);
 
 // Pointer-friendly wrappers around Get/SetWindowLong(..., GWLP_USERDATA, ...)
 // Returns the previously set value.
 GFX_EXPORT void* SetWindowUserData(HWND hwnd, void* user_data);
 GFX_EXPORT void* GetWindowUserData(HWND hwnd);
 
 // Returns true if the specified window is the current active top window or one
@@ skipping 15 matching lines @@
 GFX_EXPORT void ShowSystemMenuAtPoint(HWND window, const gfx::Point& point);
 
 // Returns the window you can use to parent a top level window.
 // Note that in some cases we create child windows not parented to its final
 // container so in those cases you should pass true in |get_real_hwnd|.
 GFX_EXPORT HWND GetWindowToParentTo(bool get_real_hwnd);
 
 }  // namespace gfx
 
 #endif  // UI_GFX_WIN_HWND_UTIL_H_