disable [add folder] button for media galleries dialog if

chrome/browser/ui/chrome_select_file_policy.cc

 // 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/chrome_select_file_policy.h"
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/logging.h"
 #include "chrome/browser/api/infobars/simple_alert_infobar_delegate.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/infobars/infobar_tab_helper.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/ui/tab_contents/tab_contents.h"
 #include "chrome/common/pref_names.h"
 #include "grit/generated_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 
 ChromeSelectFilePolicy::ChromeSelectFilePolicy(
     content::WebContents* source_contents)
     : source_contents_(source_contents) {
 }
 
 ChromeSelectFilePolicy::~ChromeSelectFilePolicy() {}
 
 bool ChromeSelectFilePolicy::CanOpenSelectFileDialog() {
-  DCHECK(g_browser_process);
-
-  // local_state() can return NULL for tests.
-  if (!g_browser_process->local_state())
-    return false;
-
-  return !g_browser_process->local_state()->FindPreference(
-             prefs::kAllowFileSelectionDialogs) ||
-         g_browser_process->local_state()->GetBoolean(
-             prefs::kAllowFileSelectionDialogs);
+  return FileSelectDialogsAllowed();
 }
 
 void ChromeSelectFilePolicy::SelectFileDenied() {
   // Show the InfoBar saying that file-selection dialogs are disabled.
   if (source_contents_) {
     TabContents* tab_contents = TabContents::FromWebContents(source_contents_);
     DCHECK(tab_contents);
     InfoBarTabHelper* infobar_helper = tab_contents->infobar_tab_helper();
     infobar_helper->AddInfoBar(new SimpleAlertInfoBarDelegate(
         infobar_helper,
         NULL,
         l10n_util::GetStringUTF16(IDS_FILE_SELECTION_DIALOG_INFOBAR),
         true));
   } else {
     LOG(WARNING) << "File-selection dialogs are disabled but no WebContents "
                  << "is given to display the InfoBar.";
   }
 }
+
+// static
+bool ChromeSelectFilePolicy::FileSelectDialogsAllowed() {
+  DCHECK(g_browser_process);
+
+  // local_state() can return NULL for tests.
+  if (!g_browser_process->local_state())
+    return false;
+
+  return !g_browser_process->local_state()->FindPreference(
+             prefs::kAllowFileSelectionDialogs) ||
+         g_browser_process->local_state()->GetBoolean(
+             prefs::kAllowFileSelectionDialogs);
+}