views: implement width snapping for DialogDelegateViews

chrome/browser/ui/views/translate/translate_bubble_view.h

 // Copyright 2013 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_TRANSLATE_TRANSLATE_BUBBLE_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_TRANSLATE_TRANSLATE_BUBBLE_VIEW_H_
 
 #include <map>
 #include <string>
 
@@ skipping 74 matching lines @@
   // views::BubbleDialogDelegateView methods.
   void Init() override;
   void ButtonPressed(views::Button* sender, const ui::Event& event) override;
 
   // views::WidgetDelegate methods.
   bool ShouldShowCloseButton() const override;
   void WindowClosing() override;
 
   // views::View methods.
   bool AcceleratorPressed(const ui::Accelerator& accelerator) override;
-  gfx::Size GetPreferredSize() const override;
+
+  // views::DialogDelegateView methods.

[Peter Kasting, 2017/03/30 00:35:36]

Nit: Combine with three sections above, label LocationBarDelegateView

+  gfx::Size GetUnsnappedPreferredSize() const override;
 
   // views::ComboboxListener methods.
   void OnPerformAction(views::Combobox* combobox) override;
 
   // views::LinkListener method.
   void LinkClicked(views::Link* source, int event_flags) override;
 
   // views::MenuButtonListener method.
   void OnMenuButtonClicked(views::MenuButton* source,
                            const gfx::Point& point,
@@ skipping 149 matching lines @@
   const bool is_in_incognito_window_;
 
   bool should_always_translate_;
 
   std::unique_ptr<WebContentMouseHandler> mouse_handler_;
 
   DISALLOW_COPY_AND_ASSIGN(TranslateBubbleView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_TRANSLATE_TRANSLATE_BUBBLE_VIEW_H_