Allow feedback form to be shown in an App Launcher feedback mode.

chrome/browser/ui/browser_commands.cc

 // Copyright 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/browser_commands.h"
 
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
 #include "base/prefs/pref_service.h"
 #include "base/utf_string_conversions.h"
@@ skipping 869 matching lines @@
 void OpenTaskManager(Browser* browser, bool highlight_background_resources) {
   content::RecordAction(UserMetricsAction("TaskManager"));
   if (highlight_background_resources)
     browser->window()->ShowBackgroundPages();
   else
     browser->window()->ShowTaskManager();
 }
 
 void OpenFeedbackDialog(Browser* browser) {
   content::RecordAction(UserMetricsAction("Feedback"));
-  chrome::ShowFeedbackPage(browser, std::string(), std::string());
+  chrome::ShowFeedbackPage(browser, std::string(), "");
 }
 
 void ToggleBookmarkBar(Browser* browser) {
   content::RecordAction(UserMetricsAction("ShowBookmarksBar"));
   browser->window()->ToggleBookmarkBar();
 }
 
 void ShowAppMenu(Browser* browser) {
   // We record the user metric for this event in WrenchMenu::RunMenu.
   browser->window()->ShowAppMenu();
@@ skipping 188 matching lines @@
           Browser::TYPE_POPUP, app_name, gfx::Rect(), browser->profile(),
           browser->host_desktop_type()));
   app_browser->tab_strip_model()->AppendWebContents(contents, true);
 
   contents->GetMutableRendererPrefs()->can_accept_load_drops = false;
   contents->GetRenderViewHost()->SyncRendererPrefs();
   app_browser->window()->Show();
 }
 
 }  // namespace chrome