Add test cases for panel overflow handling.

chrome/browser/ui/panels/panel_manager.cc

 // Copyright (c) 2011 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/panels/panel_manager.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/fullscreen.h"
@@ skipping 234 matching lines @@
 
 void PanelManager::RemoveAll() {
   panel_strip_->RemoveAll();
   panel_overflow_strip_->RemoveAll();
 }
 
 int PanelManager::num_panels() const {
   return panel_strip_->num_panels() + panel_overflow_strip_->num_panels();
 }
 
-const PanelManager::Panels& PanelManager::panels() const {
-  return panel_strip_->panels();
+std::vector<Panel*> PanelManager::panels() const {
+  std::vector<Panel*> panels = panel_strip_->panels();
+  for (PanelOverflowStrip::Panels::const_iterator iter =
+           panel_overflow_strip_->panels().begin();
+       iter != panel_overflow_strip_->panels().end(); ++iter)
+    panels.push_back(*iter);
+  return panels;
 }
 
 void PanelManager::SetMouseWatcher(PanelMouseWatcher* watcher) {
   panel_mouse_watcher_.reset(watcher);
 }