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

chrome/browser/chromeos/extensions/file_browser_handler_api.cc

Index: chrome/browser/chromeos/extensions/file_browser_handler_api.cc
diff --git a/chrome/browser/chromeos/extensions/file_browser_handler_api.cc b/chrome/browser/chromeos/extensions/file_browser_handler_api.cc
index bafb68557ca9c959d35bf6f3a2cadff22da1df9d..e9676267921fd594f588e62c77b0ad74806aecab 100644
--- a/chrome/browser/chromeos/extensions/file_browser_handler_api.cc
+++ b/chrome/browser/chromeos/extensions/file_browser_handler_api.cc
@@ -15,6 +15,7 @@
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_window.h"
+#include "chrome/browser/ui/chrome_select_file_policy.h"
 #include "chrome/browser/ui/select_file_dialog.h"
 #include "chrome/browser/ui/tab_contents/tab_contents.h"
 #include "chrome/common/extensions/api/file_browser_handler_internal.h"
@@ -123,11 +124,13 @@ bool FileSelectorImpl::DoSelectFile(const FilePath& suggested_name,
   if (!tab_contents)
     return false;
 
-  dialog_ = SelectFileDialog::Create(this);
+  dialog_ = SelectFileDialog::Create(
+      this, new ChromeSelectFilePolicy(tab_contents->web_contents()));
+
   dialog_->SelectFile(SelectFileDialog::SELECT_SAVEAS_FILE,
       string16() /* dialog title*/, suggested_name,
       NULL /* allowed file types */, 0 /* file type index */,
-      std::string() /* default file extension */, tab_contents->web_contents(),
+      std::string() /* default file extension */,
       browser->window()->GetNativeWindow(), NULL /* params */);
 
   return dialog_->IsRunning(browser->window()->GetNativeWindow());