views: Make view::Views::GetPreferredSize() const.

ui/views/bubble/bubble_delegate.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_VIEWS_BUBBLE_BUBBLE_DELEGATE_H_
 #define UI_VIEWS_BUBBLE_BUBBLE_DELEGATE_H_
 
 #include "base/gtest_prod_util.h"
 #include "ui/views/bubble/bubble_border.h"
 #include "ui/views/widget/widget.h"
@@ skipping 77 matching lines @@
   bool accept_events() const { return accept_events_; }
   void set_accept_events(bool accept_events) { accept_events_ = accept_events; }
 
   bool border_accepts_events() const { return border_accepts_events_; }
   void set_border_accepts_events(bool event) { border_accepts_events_ = event; }
 
   bool adjust_if_offscreen() const { return adjust_if_offscreen_; }
   void set_adjust_if_offscreen(bool adjust) { adjust_if_offscreen_ = adjust; }
 
   // Get the arrow's anchor rect in screen space.
-  virtual gfx::Rect GetAnchorRect();
+  virtual gfx::Rect GetAnchorRect() const;
 
   // Allows delegates to provide custom parameters before widget initialization.
   virtual void OnBeforeBubbleWidgetInit(Widget::InitParams* params,
                                         Widget* widget) const;
 
   // Sets the bubble alignment relative to the anchor. This may only be called
   // after calling CreateBubble.
   void SetAlignment(BubbleBorder::BubbleAlignment alignment);
 
   // Sets the bubble arrow paint type.
@@ skipping 44 matching lines @@
   bool close_on_esc_;
   bool close_on_deactivate_;
 
   // The view and widget to which this bubble is anchored. Since an anchor view
   // can be deleted without notice, we store it in the ViewStorage and retrieve
   // it from there. It will make sure that the view is still valid.
   const int anchor_view_storage_id_;
   Widget* anchor_widget_;
 
   // The anchor rect used in the absence of an anchor view.
-  gfx::Rect anchor_rect_;
+  mutable gfx::Rect anchor_rect_;
 
   // The arrow's location on the bubble.
   BubbleBorder::Arrow arrow_;
 
   // Bubble border shadow to use.
   BubbleBorder::Shadow shadow_;
 
   // The background color of the bubble; and flag for when it's explicitly set.
   SkColor color_;
   bool color_explicitly_set_;
@@ skipping 17 matching lines @@
 
   // Parent native window of the bubble.
   gfx::NativeView parent_window_;
 
   DISALLOW_COPY_AND_ASSIGN(BubbleDelegateView);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_BUBBLE_BUBBLE_DELEGATE_H_