Layout panels on top of their launcher icons

ash/test/test_launcher_delegate.h

Index: ash/test/test_launcher_delegate.h
diff --git a/ash/test/test_launcher_delegate.h b/ash/test/test_launcher_delegate.h
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+// 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 ASH_TEST_TEST_LAUNCHER_DELEGATE_H_
+#define ASH_TEST_TEST_LAUNCHER_DELEGATE_H_
+#pragma once
+
+#include <map>
+#include <set>
+
+#include "ash/launcher/launcher_delegate.h"
+#include "base/compiler_specific.h"
+#include "ui/aura/window_observer.h"
+
+namespace ash {
+
+class LauncherModel;
+
+namespace test {
+
+// Test implementation of LauncherDelegate.
+// Tests may create icons for windows by calling AddLauncherItem
+class TestLauncherDelegate : public LauncherDelegate,
+                             public aura::WindowObserver {
+ public:
+  TestLauncherDelegate(LauncherModel* model);
+
+  void AddLauncherItem(aura::Window* window);
+
+  // WindowObserver implementation
+  void OnWillRemoveWindow(aura::Window* window);
+
+  // LauncherDelegate implementation.
+  virtual void CreateNewTab() OVERRIDE;
+  virtual void CreateNewWindow() OVERRIDE;
+  virtual void ItemClicked(const LauncherItem& item) OVERRIDE;
+  virtual int GetBrowserShortcutResourceId() OVERRIDE;
+  virtual string16 GetTitle(const LauncherItem& item) OVERRIDE;
+  virtual ui::MenuModel* CreateContextMenu(const LauncherItem& item) OVERRIDE;
+  virtual ui::MenuModel* CreateContextMenuForLauncher() OVERRIDE;
+  virtual ash::LauncherID GetIDByWindow(aura::Window* window) OVERRIDE;
+
+ private:
+  typedef std::map<aura::Window*, ash::LauncherID> WindowToID;
+  typedef std::set<aura::Window*> ObservedWindows;
+
+  aura::Window* GetWindowByID(ash::LauncherID id);
+
+  LauncherModel* model_;
+
+  // Maps from window to the id we gave it.
+  WindowToID window_to_id_;
+
+  // Parent windows we are watching.
+  ObservedWindows observed_windows_;
+
+  DISALLOW_COPY_AND_ASSIGN(TestLauncherDelegate);
+};
+
+} // namespace test
+} // namespace ash
+
+#endif // ASH_TEST_TEST_LAUNCHER_DELEGATE