Start consolidating cross-port file selection code into ui/base/dialogs.

chrome/browser/ui/cocoa/select_file_dialog_mac.mm

 // 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/ui/select_file_dialog.h"
 
 #import <Cocoa/Cocoa.h>
 #include <CoreServices/CoreServices.h>
 
 #include <map>
@@ skipping 43 matching lines @@
 
 // NSSavePanel delegate method
 - (BOOL)panel:(id)sender shouldShowFilename:(NSString *)filename;
 
 @end
 
 // Implementation of SelectFileDialog that shows Cocoa dialogs for choosing a
 // file or folder.
 class SelectFileDialogImpl : public SelectFileDialog {
  public:
-  explicit SelectFileDialogImpl(Listener* listener);
+  explicit SelectFileDialogImpl(Listener* listener,
+                                ui::SelectFilePolicy* policy);
 
   // BaseShellDialog implementation.
   virtual bool IsRunning(gfx::NativeWindow parent_window) const;
   virtual void ListenerDestroyed();
 
   // Callback from ObjC bridge.
   void FileWasSelected(NSSavePanel* dialog,
                        NSWindow* parent_window,
                        bool was_cancelled,
                        bool is_multi,
@@ skipping 39 matching lines @@
 
   // A map from file dialogs to their types.
   std::map<NSSavePanel*, Type> type_map_;
 
   bool hasMultipleFileTypeChoices_;
 
   DISALLOW_COPY_AND_ASSIGN(SelectFileDialogImpl);
 };
 
 // static
-SelectFileDialog* SelectFileDialog::Create(Listener* listener) {
-  return new SelectFileDialogImpl(listener);
+SelectFileDialog* SelectFileDialog::Create(Listener* listener,
+                                           ui::SelectFilePolicy* policy) {
+  return new SelectFileDialogImpl(listener, policy);
 }
 
-SelectFileDialogImpl::SelectFileDialogImpl(Listener* listener)
-    : SelectFileDialog(listener),
+SelectFileDialogImpl::SelectFileDialogImpl(Listener* listener,
+                                           ui::SelectFilePolicy* policy)
+    : SelectFileDialog(listener, policy),
       bridge_([[SelectFileDialogBridge alloc]
                initWithSelectFileDialogImpl:this]) {
 }
 
 bool SelectFileDialogImpl::IsRunning(gfx::NativeWindow parent_window) const {
   return parents_.find(parent_window) != parents_.end();
 }
 
 void SelectFileDialogImpl::ListenerDestroyed() {
   listener_ = NULL;
@@ skipping 286 matching lines @@
                                          paths,
                                          index);
   [panel release];
 }
 
 - (BOOL)panel:(id)sender shouldShowFilename:(NSString *)filename {
   return selectFileDialogImpl_->ShouldEnableFilename(sender, filename);
 }
 
 @end