Auto-size the views version of the options dialog.

views/controls/button/native_button_win.h

-// Copyright (c) 2009 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.
+// Copyright (c) 2010 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 VIEWS_CONTROLS_BUTTON_NATIVE_BUTTON_WIN_H_
 #define VIEWS_CONTROLS_BUTTON_NATIVE_BUTTON_WIN_H_
 
 #include "views/controls/native_control_win.h"
 #include "views/controls/button/native_button_wrapper.h"
 
 namespace views {
 
 // A View that hosts a native Windows button.
@@ skipping 28 matching lines @@
   virtual void CreateNativeControl();
   virtual void NativeControlCreated(HWND control_hwnd);
 
   // Returns true if this button is actually a checkbox or radio button.
   virtual bool IsCheckbox() const { return false; }
 
  private:
   // The NativeButton we are bound to.
   NativeButton* native_button_;
 
+  // It's expensive to find the size of a button on windows, so we cache it.
+  mutable gfx::Size button_size_;
+  mutable bool button_size_valid_;
+
   DISALLOW_COPY_AND_ASSIGN(NativeButtonWin);
 };
 
 // A View that hosts a native Windows checkbox.
 class NativeCheckboxWin : public NativeButtonWin {
  public:
   explicit NativeCheckboxWin(Checkbox* native_button);
   virtual ~NativeCheckboxWin();
 
   // Overridden from View:
@@ skipping 37 matching lines @@
   virtual void CreateNativeControl();
   virtual bool IsRadioButton() const { return true; }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(NativeRadioButtonWin);
 };
 
 }  // namespace views
 
 #endif  // #ifndef VIEWS_CONTROLS_BUTTON_NATIVE_BUTTON_WIN_H_