Improve panel related tests to make them more reliable

chrome/browser/ui/panels/panel_manager.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/panels/panel_manager.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 268 matching lines @@
   collection->UpdatePanelOnCollectionChange(panel);
 
   return panel;
 }
 
 PanelCollection* PanelManager::GetCollectionForNewPanel(
     Panel* new_panel,
     const gfx::Rect& bounds,
     CreateMode mode,
     PanelCollection::PositioningMask* positioning_mask) {
-  if (mode == CREATE_AS_DOCKED) {
-    // Delay layout refreshes in case multiple panels are created within
-    // a short time of one another or the focus changes shortly after panel
-    // is created to avoid excessive screen redraws.
-    *positioning_mask = PanelCollection::DELAY_LAYOUT_REFRESH;
+  if (mode == CREATE_AS_DOCKED)
     return docked_collection_.get();
-  }
 
   DCHECK_EQ(CREATE_AS_DETACHED, mode);
   *positioning_mask = PanelCollection::DEFAULT_POSITION;
 
   // If the stacking support is not enabled, new panel will still be created as
   // detached.
   if (!IsPanelStackingEnabled())
     return detached_collection_.get();
 
   // If there're stacks, try to find a stack that can fit new panel.
@@ skipping 244 matching lines @@
 void PanelManager::SetMouseWatcher(PanelMouseWatcher* watcher) {
   panel_mouse_watcher_.reset(watcher);
 }
 
 void PanelManager::OnPanelAnimationEnded(Panel* panel) {
   content::NotificationService::current()->Notify(
       chrome::NOTIFICATION_PANEL_BOUNDS_ANIMATIONS_FINISHED,
       content::Source<Panel>(panel),
       content::NotificationService::NoDetails());
 }