Addition testing for panels drag and drop.

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 <algorithm>
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 18 matching lines @@
 const double kPanelMaxHeightFactor = 0.5;
 
 // Horizontal spacing between two panels.
 const int kPanelsHorizontalSpacing = 4;
 
 // Single instance of PanelManager.
 scoped_ptr<PanelManager> panel_instance;
 }  // namespace
 
 // static
+int PanelManager::horizontal_spacing() {
+  return kPanelsHorizontalSpacing;
+}
+
+// static
 PanelManager* PanelManager::GetInstance() {
   if (!panel_instance.get()) {
     panel_instance.reset(new PanelManager());
   }
   return panel_instance.get();
 }
 
 PanelManager::PanelManager()
     : max_width_(0),
       max_height_(0),
@@ skipping 304 matching lines @@
 
   // Start from the bottom to avoid reshuffling.
   for (Panels::reverse_iterator iter = panels_.rbegin();
        iter != panels_.rend(); ++iter)
     (*iter)->Close();
 }
 
 bool PanelManager::is_dragging_panel() const {
   return dragging_panel_index_ != kInvalidPanelIndex;
 }