linux_aura: Make combo boxes work with DesktopRootWindowHostLinux.

ui/aura/desktop/desktop_layout_manager.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 UI_AURA_DESKTOP_DESKTOP_LAYOUT_MANAGER_H_

[Ben Goodger (Google), 2012/09/19 21:29:23]

put this file in ui/views/widget/ alongside the other desktop_ classes, and into
the views target.

+#define UI_AURA_DESKTOP_DESKTOP_LAYOUT_MANAGER_H_
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "ui/aura/aura_export.h"
+#include "ui/aura/layout_manager.h"
+
+namespace aura {
+class RootWindow;
+class Window;
+
+// A LayoutManager that by default makes the first Window added to a
+// RootWindow the full size, and will be resized as the RootWindow is resized.
+class AURA_EXPORT DesktopLayoutManager : public LayoutManager {
+ public:
+  DesktopLayoutManager(RootWindow* root_window);

[Ben Goodger (Google), 2012/09/19 21:29:23]

explicit

+  virtual ~DesktopLayoutManager();
+
+  // Overridden from aura::LayoutManager:
+  virtual void OnWindowResized() OVERRIDE;
+  virtual void OnWindowAddedToLayout(Window* child) OVERRIDE;
+  virtual void OnWillRemoveWindowFromLayout(Window* child) OVERRIDE;
+  virtual void OnWindowRemovedFromLayout(Window* child) OVERRIDE;
+  virtual void OnChildWindowVisibilityChanged(Window* child,
+                                              bool visible) OVERRIDE;
+  virtual void SetChildBounds(Window* child,
+                              const gfx::Rect& requested_bounds) OVERRIDE;
+
+ private:
+  // Sets the size of |main_window_| to the internal bounds of |root_window_|.
+  void SetMainWindowSize();
+
+  RootWindow* root_window_;
+  Window* main_window_;
+
+  DISALLOW_COPY_AND_ASSIGN(DesktopLayoutManager);
+};
+
+}  // namespace aura
+
+#endif  // UI_AURA_DESKTOP_DESKTOP_LAYOUT_MANAGER_H_