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

chrome/browser/ui/chrome_select_file_policy.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 CHROME_BROWSER_UI_CHROME_SELECT_FILE_POLICY_H_
+#define CHROME_BROWSER_UI_CHROME_SELECT_FILE_POLICY_H_
+
+#include "base/basictypes.h"
+#include "base/callback_forward.h"
+#include "base/compiler_specific.h"
+#include "ui/base/dialogs/select_file_policy.h"
+
+namespace content {
+class WebContents;
+}
+
+// A chrome specific SelectFilePolicy that checks local_state(), and will
+// display an infobar on the weakly owned |source_contents|.
+class ChromeSelectFilePolicy : public ui::SelectFilePolicy {
+ public:
+  explicit ChromeSelectFilePolicy(content::WebContents* source_contents);
+  virtual ~ChromeSelectFilePolicy();
+
+  // Overridden from ui::SelectFilePolicy:
+  virtual bool CanOpenSelectFileDialog() OVERRIDE;
+  virtual void SelectFileDenied() OVERRIDE;
+
+ private:
+  content::WebContents* source_contents_;
+
+  DISALLOW_COPY_AND_ASSIGN(ChromeSelectFilePolicy);
+};
+
+#endif  // CHROME_BROWSER_UI_CHROME_SELECT_FILE_POLICY_H_