harmony: fix sizing on webusb chooser dialog

chrome/browser/ui/views/device_chooser_content_view.h

 // Copyright 2016 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_DEVICE_CHOOSER_CONTENT_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_DEVICE_CHOOSER_CONTENT_VIEW_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 18 matching lines @@
                                  public ChooserController::View,
                                  public views::StyledLabelListener {
  public:
   DeviceChooserContentView(
       views::TableViewObserver* table_view_observer,
       std::unique_ptr<ChooserController> chooser_controller);
   ~DeviceChooserContentView() override;
 
   // views::View:
   void Layout() override;
+  gfx::Size GetPreferredSize() const override;
 
   // ui::TableModel:
   int RowCount() override;
   base::string16 GetText(int row, int column_id) override;
   void SetObserver(ui::TableModelObserver* observer) override;
   gfx::ImageSkia GetIcon(int row) override;
 
   // ChooserController::View:
   void OnOptionsInitialized() override;
   void OnOptionAdded(size_t index) override;
@@ skipping 38 matching lines @@
   base::string16 help_text_;
   base::string16 help_and_scanning_text_;
   base::string16 help_and_re_scan_text_;
   gfx::Range help_text_range_;
   gfx::Range re_scan_text_range_;
 
   DISALLOW_COPY_AND_ASSIGN(DeviceChooserContentView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_DEVICE_CHOOSER_CONTENT_VIEW_H_