Revert of Aura Android: upstream platform_util* related files

chrome/browser/platform_util_aura.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/browser/platform_util.h"
 
 #include "base/logging.h"
 #include "ui/aura/window.h"
 
 #if defined(USE_ASH)
 #include "ash/wm/window_util.h"
 #endif
 
 namespace platform_util {
 
-#if defined(OS_ANDROID)
-// TODO(bshe): We might want to use platform_util_android.cc for Aura Android.
-// See crbug.com/561664
-void ShowItemInFolder(Profile* profile, const base::FilePath& full_path) {
-  NOTIMPLEMENTED();
-}
-
-void OpenItem(Profile* profile,
-              const base::FilePath& full_path,
-              OpenItemType item_type,
-              const OpenOperationCallback& callback) {
-  NOTIMPLEMENTED();
-}
-
-void OpenExternal(Profile* profile, const GURL& url) {
-  NOTIMPLEMENTED();
-}
-#endif
-
 gfx::NativeWindow GetTopLevel(gfx::NativeView view) {
   return view->GetToplevelWindow();
 }
 
 gfx::NativeView GetViewForWindow(gfx::NativeWindow window) {
   DCHECK(window);
   return window;
 }
 
 gfx::NativeView GetParent(gfx::NativeView view) {
@@ skipping 15 matching lines @@
 #else
   NOTIMPLEMENTED();
 #endif
 }
 
 bool IsVisible(gfx::NativeView view) {
   return view->IsVisible();
 }
 
 }  // namespace platform_util