Improve panel related tests to make them more reliable

chrome/browser/ui/panels/panel_collection.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_PANELS_PANEL_COLLECTION_H_
 #define CHROME_BROWSER_UI_PANELS_PANEL_COLLECTION_H_
 
 #include "chrome/browser/ui/panels/panel_constants.h"
 #include "ui/gfx/point.h"
 #include "ui/gfx/rect.h"
@@ skipping 16 matching lines @@
     // The panel is added and placed at default position that is decided by the
     // collection.
     DEFAULT_POSITION = 0x0,
     // The panel is being added based on its current known position.
     KNOWN_POSITION = 0x1,
     // The panel is added and placed at top position (currently only used by
     // stacked collection)
     TOP_POSITION = 0x2,
     // Do not update panel bounds. Only valid with DEFAULT_POSIITON.
     DO_NOT_UPDATE_BOUNDS = 0x4,
-    // Wait for a brief delay before refreshing layout of the collection after
-    // adding panel to the collection. If not set, the collection will refresh
-    // its layout immediately.
-    DELAY_LAYOUT_REFRESH = 0x8,
     // Do not refresh layout. Used by stacking.
-    NO_LAYOUT_REFRESH = 0x10,
+    NO_LAYOUT_REFRESH = 0x8,
     // Collapse other inactive stacked panels such the tha new panel can fit
     // within the working area. Used by stacking.
-    COLLAPSE_TO_FIT = 0x20
+    COLLAPSE_TO_FIT = 0x10
   };
 
   enum RemovalReason {
     PANEL_CLOSED,
     PANEL_CHANGED_COLLECTION
   };
 
   Type type() const { return type_; }
 
   // Called when the display area is changed.
@@ skipping 87 matching lines @@
   virtual void UpdatePanelOnCollectionChange(Panel* panel) = 0;
 
  protected:
   explicit PanelCollection(Type type);
   virtual ~PanelCollection();
 
   const Type type_;  // Type of this panel collection.
 };
 
 #endif  // CHROME_BROWSER_UI_PANELS_PANEL_COLLECTION_H_