Add PanelOverflowStrip to handle panel overflow.

chrome/browser/ui/panels/base_panel_browser_test.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/base_panel_browser_test.h"
 
 #include "chrome/browser/ui/browser_list.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 293 matching lines @@
       // Restore focus where it was. It will deactivate the new panel.
       last_active_browser->window()->Activate();
     } else {
       panel->ShowInactive();
     }
 #else
     panel->ShowInactive();
 #endif
   }
   MessageLoopForUI::current()->RunAllPending();
+
   // More waiting, because gaining or losing focus may require inter-process
   // asynchronous communication, and it is not enough to just run the local
   // message loop to make sure this activity has completed.
-  WaitForPanelActiveState(panel, params.show_flag);
+  // Note that overflow panel will not be shown as active.

[jennb, 2011/12/02 21:16:58]

Let's not allow tests create panels that start out in overflow state as that's
not possible in real usage.

[jianli, 2011/12/02 23:23:46]

Removed.

+  ActiveState show_flag = params.show_flag;
+  if (panel->expansion_state() == Panel::IN_OVERFLOW)
+    show_flag = SHOW_AS_INACTIVE;
+  WaitForPanelActiveState(panel, show_flag);
 
   // On Linux, window size is not available right away and we should wait
   // before moving forward with the test.
   WaitForWindowSizeAvailable(panel);
 
   // Wait for the bounds animations on creation to finish.
   WaitForBoundsAnimationFinished(panel);
 
   return panel;
 }
@@ skipping 33 matching lines @@
   std::string error;
   scoped_refptr<Extension> extension = Extension::Create(
       full_path,  location, *input_value,
       Extension::STRICT_ERROR_CHECKS, &error);
   EXPECT_TRUE(extension.get());
   EXPECT_STREQ("", error.c_str());
   browser()->GetProfile()->GetExtensionService()->
       OnExtensionInstalled(extension.get(), false, -1);
   return extension;
 }