aura: Fix file-opening functions in platform_util.

chrome/browser/platform_util_aura.cc

Index: chrome/browser/platform_util_aura.cc
diff --git a/chrome/browser/platform_util_aura.cc b/chrome/browser/platform_util_aura.cc
index 62d06012f823508d176ca3fc586adfb0b578e928..7f29fdc79cc405f2cd99a16e2983ff21f889cd21 100644
--- a/chrome/browser/platform_util_aura.cc
+++ b/chrome/browser/platform_util_aura.cc
@@ -9,21 +9,6 @@
 
 namespace platform_util {
 
-void ShowItemInFolder(const FilePath& full_path) {
-  // TODO(beng):
-  NOTIMPLEMENTED();
-}
-
-void OpenItem(const FilePath& full_path) {
-  // TODO(beng):
-  NOTIMPLEMENTED();
-}
-
-void OpenExternal(const GURL& url) {
-  // TODO(beng):
-  NOTIMPLEMENTED();
-}
-
 gfx::NativeWindow GetTopLevel(gfx::NativeView view) {
   return view->GetToplevelWindow();
 }