Move SelectFileDialog implementation to ui/base/dialogs/

chrome/browser/ui/views/select_file_dialog_win.cc

Index: chrome/browser/ui/views/select_file_dialog_win.cc
diff --git a/chrome/browser/ui/views/select_file_dialog_win.cc b/chrome/browser/ui/views/select_file_dialog_win.cc
index 167c69b972aec592d2c5bfb38e2f88bcdc4b46ec..6ed860a935b68205483d99392731ac1e2ab7f36d 100644
--- a/chrome/browser/ui/views/select_file_dialog_win.cc
+++ b/chrome/browser/ui/views/select_file_dialog_win.cc
@@ -89,9 +89,10 @@ bool CallGetSaveFileName(OPENFILENAME* ofn) {
 // '*.something', for example '*.*' or it can be blank (which is treated as
 // *.*). |suggested_ext| should contain the extension without the dot (.) in
 // front, for example 'jpg'.
-std::wstring AppendExtensionIfNeeded(const std::wstring& filename,
-                                     const std::wstring& filter_selected,
-                                     const std::wstring& suggested_ext) {
+extern std::wstring AppendExtensionIfNeeded(
+    const std::wstring& filename,
+    const std::wstring& filter_selected,
+    const std::wstring& suggested_ext) {
   DCHECK(!filename.empty());
   std::wstring return_value = filename;