athena: Add support for virtual keyboard.

athena/common/fill_layout_manager.h

+// Copyright 2014 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 ATHENA_COMMON_FILL_LAYOUT_MANAGER_H_
+#define ATHENA_COMMON_FILL_LAYOUT_MANAGER_H_
+
+#include "athena/athena_export.h"
+#include "ui/aura/layout_manager.h"
+
+namespace athena {
+
+class ATHENA_EXPORT FillLayoutManager : public aura::LayoutManager {
+ public:
+  explicit FillLayoutManager(aura::Window* container);
+  virtual ~FillLayoutManager();
+
+  // aura::LayoutManager:
+  virtual void OnWindowResized() OVERRIDE;
+  virtual void OnWindowAddedToLayout(aura::Window* child) OVERRIDE;
+  virtual void OnWillRemoveWindowFromLayout(aura::Window* child) OVERRIDE;
+  virtual void OnWindowRemovedFromLayout(aura::Window* child) OVERRIDE;
+  virtual void OnChildWindowVisibilityChanged(aura::Window* child,
+                                              bool visible) OVERRIDE;
+  virtual void SetChildBounds(aura::Window* child,
+                              const gfx::Rect& requested_bounds) OVERRIDE;
+
+ private:
+  aura::Window* container_;
+
+  DISALLOW_COPY_AND_ASSIGN(FillLayoutManager);
+};
+
+}  // namespace athena
+
+#endif  // ATHENA_COMMON_FILL_LAYOUT_MANAGER_H_