views: remove arrow from extension install dialog's details section

chrome/browser/ui/views/extensions/extension_install_dialog_view.h

 // Copyright 2014 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_EXTENSIONS_EXTENSION_INSTALL_DIALOG_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_EXTENSIONS_EXTENSION_INSTALL_DIALOG_VIEW_H_
 
 #include "base/macros.h"
 #include "chrome/browser/extensions/extension_install_prompt.h"
 #include "ui/gfx/animation/animation_delegate.h"
@@ skipping 13 matching lines @@
 namespace extensions {
 class ExperienceSamplingEvent;
 }
 
 namespace ui {
 class ResourceBundle;
 }
 
 namespace views {
 class GridLayout;
-class ImageButton;
 class Link;
 }
 
 // Implements the extension installation dialog for TOOLKIT_VIEWS.
 class ExtensionInstallDialogView : public views::DialogDelegateView,
                                    public views::LinkListener {
  public:
   ExtensionInstallDialogView(
       Profile* profile,
       content::PageNavigator* navigator,
@@ skipping 118 matching lines @@
 
  private:
   // A view which displays all the details of an IssueAdviceInfoEntry.
   class DetailsView : public views::View {
    public:
     DetailsView(int horizontal_space, bool parent_bulleted);
     ~DetailsView() override {}
 
     // views::View:
     gfx::Size GetPreferredSize() const override;
+    int GetHeightForWidth(int width) const override;
 
     void AddDetail(const base::string16& detail);
 
     // Animates this to be a height proportional to |state|.
     void AnimateToState(double state);
 
    private:
     views::GridLayout* layout_;
     double state_;
 
     DISALLOW_COPY_AND_ASSIGN(DetailsView);
   };
 
   // Expand/Collapse the detail section for this ExpandableContainerView.
   void ToggleDetailLevel();
 
-  // Updates |arrow_toggle_| according to the given state.
-  void UpdateArrowToggle(bool expanded);
-
   // A view for showing |issue_advice.details|.
   DetailsView* details_view_;
 
   gfx::SlideAnimation slide_animation_;
 
   // The 'more details' link shown under the heading (changes to 'hide details'
   // when the details section is expanded).
   views::Link* more_details_;
 
-  // The up/down arrow next to the 'more detail' link (points up/down depending
-  // on whether the details section is expanded).
-  views::ImageButton* arrow_toggle_;
-
   // Whether the details section is expanded.
   bool expanded_;
 
   DISALLOW_COPY_AND_ASSIGN(ExpandableContainerView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_EXTENSIONS_EXTENSION_INSTALL_DIALOG_VIEW_H_