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

ash/system/drive/tray_drive.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 "ash/system/drive/tray_drive.h"
 
 #include <vector>
 
 #include "ash/metrics/user_metrics_recorder.h"
 #include "ash/shell.h"
@@ skipping 111 matching lines @@
   }
 
  private:
 
   class OperationProgressBar : public views::ProgressBar {
    public:
     OperationProgressBar() {}
    private:
 
     // Overridden from View:
-    virtual gfx::Size GetPreferredSize() OVERRIDE {
+    virtual gfx::Size GetPreferredSize() const OVERRIDE {
       return gfx::Size(kProgressBarWidth, kProgressBarHeight);
     }
 
     DISALLOW_COPY_AND_ASSIGN(OperationProgressBar);
   };
 
   class RowView : public HoverHighlightView,
                   public views::ButtonListener {
    public:
     RowView(DriveDetailedView* parent,
@@ skipping 48 matching lines @@
       status_img_->SetImage(container_->GetImageForState(state));
       progress_bar_->SetValue(progress);
       cancel_button_->SetVisible(
           state == ash::DriveOperationStatus::OPERATION_NOT_STARTED ||
           state == ash::DriveOperationStatus::OPERATION_IN_PROGRESS);
     }
 
    private:
 
     // views::View overrides.
-    virtual gfx::Size GetPreferredSize() OVERRIDE {
+    virtual gfx::Size GetPreferredSize() const OVERRIDE {
       return gfx::Size(
           status_img_->GetPreferredSize().width() +
           label_container_->GetPreferredSize().width() +
           cancel_button_->GetPreferredSize().width() +
               2 * kSidePadding + 2 * kHorizontalPadding,
           std::max(status_img_->GetPreferredSize().height(),
                    std::max(label_container_->GetPreferredSize().height(),
                             cancel_button_->GetPreferredSize().height())) +
                    kTopPadding + kBottomPadding);
     }
@@ skipping 296 matching lines @@
   DriveOperationStatusList empty_list;
 
   tray_view()->SetVisible(false);
   if (default_)
     default_->Update(&empty_list);
   if (detailed_)
     detailed_->Update(&empty_list);
 }
 
 }  // namespace ash