views: implement width snapping for DialogDelegateViews

chrome/browser/ui/views/extensions/extension_install_dialog_view.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 CHROME_BROWSER_UI_VIEWS_EXTENSIONS_EXTENSION_INSTALL_DIALOG_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_EXTENSIONS_EXTENSION_INSTALL_DIALOG_VIEW_H_
 
 #include "base/macros.h"
 #include "chrome/browser/extensions/extension_install_prompt.h"
 #include "ui/gfx/animation/animation_delegate.h"
@@ skipping 44 matching lines @@
   void OnNativeThemeChanged(const ui::NativeTheme* theme) override;
 
   // views::DialogDelegateView:
   int GetDialogButtons() const override;
   base::string16 GetDialogButtonLabel(ui::DialogButton button) const override;
   int GetDefaultDialogButton() const override;
   bool Cancel() override;
   bool Accept() override;
   ui::ModalType GetModalType() const override;
   void Layout() override;
-  gfx::Size GetPreferredSize() const override;
+  gfx::Size GetUnsnappedPreferredSize() const override;
   views::View* CreateExtraView() override;
 
   // views::LinkListener:
   void LinkClicked(views::Link* source, int event_flags) override;
 
   // Initializes the dialog view, adding in permissions if they exist.
   void InitView();
 
   // Adds permissions of |perm_type| to the dialog view if they exist.
   bool AddPermissions(views::GridLayout* layout,
@@ skipping 113 matching lines @@
   // on whether the details section is expanded).
   views::ImageButton* arrow_toggle_;
 
   // Whether the details section is expanded.
   bool expanded_;
 
   DISALLOW_COPY_AND_ASSIGN(ExpandableContainerView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_EXTENSIONS_EXTENSION_INSTALL_DIALOG_VIEW_H_