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

ui/views/bubble/bubble_delegate.cc

 // 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.
 
 #include "ui/views/bubble/bubble_delegate.h"
 
 #include "ui/accessibility/ax_view_state.h"
 #include "ui/gfx/color_utils.h"
 #include "ui/gfx/rect.h"
 #include "ui/native_theme/native_theme.h"
@@ skipping 163 matching lines @@
 void BubbleDelegateView::OnWidgetBoundsChanged(Widget* widget,
                                                const gfx::Rect& new_bounds) {
   if (anchor_widget() == widget)
     SizeToContents();
 }
 
 View* BubbleDelegateView::GetAnchorView() const {
   return ViewStorage::GetInstance()->RetrieveView(anchor_view_storage_id_);
 }
 
-gfx::Rect BubbleDelegateView::GetAnchorRect() {
+gfx::Rect BubbleDelegateView::GetAnchorRect() const {
   if (!GetAnchorView())
     return anchor_rect_;
 
   anchor_rect_ = GetAnchorView()->GetBoundsInScreen();
   anchor_rect_.Inset(anchor_view_insets_);
   return anchor_rect_;
 }
 
 void BubbleDelegateView::OnBeforeBubbleWidgetInit(Widget::InitParams* params,
                                                   Widget* widget) const {
@@ skipping 94 matching lines @@
   if (widget == GetWidget() && anchor_widget() &&
       anchor_widget()->GetTopLevelWidget()) {
     if (visible)
       anchor_widget()->GetTopLevelWidget()->DisableInactiveRendering();
     else
       anchor_widget()->GetTopLevelWidget()->EnableInactiveRendering();
   }
 }
 
 }  // namespace views