Support auto-hide taskbar for panels on Windows.

chrome/browser/ui/panels/panel_browsertest.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 "base/command_line.h"
 #include "chrome/browser/download/download_manager.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
@@ skipping 71 matching lines @@
     browser()->GetProfile()->GetExtensionService()->OnLoadSingleExtension(
         extension.get(), false);
     return extension;
   }
 
   void TestCreatePanelOnOverflow() {
     PanelManager* panel_manager = PanelManager::GetInstance();
     EXPECT_EQ(0, panel_manager->num_panels()); // No panels initially.
 
     // Specify the work area for testing purpose.
-    panel_manager->SetWorkArea(gfx::Rect(0, 0, 800, 600));
+    panel_manager->SetWorkArea(gfx::Rect(0, 0, 800, 600), 0);
 
     // Create testing extensions.
     scoped_refptr<Extension> extension1 =
         CreateExtension(FILE_PATH_LITERAL("extension1"));
     scoped_refptr<Extension> extension2 =
         CreateExtension(FILE_PATH_LITERAL("extension2"));
     scoped_refptr<Extension> extension3 =
         CreateExtension(FILE_PATH_LITERAL("extension3"));
 
     // First, create 3 panels.
@@ skipping 398 matching lines @@
   EXPECT_EQ(1, tabbed_browser->tab_count());
   ASSERT_TRUE(tabbed_browser->window()->IsDownloadShelfVisible());
   tabbed_browser->CloseWindow();
 #endif
 
   EXPECT_EQ(1, panel_browser->tab_count());
   ASSERT_FALSE(panel_browser->window()->IsDownloadShelfVisible());
 
   panel_browser->CloseWindow();
 }