ExtensionInstallDialogView: reorder overrides by class

No functional change. Group methods together by the class they override
from.

Change-Id: I9f6850bae872239915d9e698b9e2020c6efcef8c
Reviewed-on: https://chromium-review.googlesource.com/1153613Reviewed-by: Devlin <rdevlin.cronin@chromium.org>
Commit-Queue: James Wallace-Lee <jamwalla@chromium.org>
Cr-Commit-Position: refs/heads/master@{#578813}

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

@@ -48,20 +48,24 @@ class ExtensionInstallDialogView : public views::DialogDelegateView,
   void ResizeWidget();
 
  private:
-  // views::DialogDelegateView:
+  // views::View:
   gfx::Size CalculatePreferredSize() const override;
-  void AddedToWidget() override;
   void VisibilityChanged(views::View* starting_from, bool is_visible) override;
-  int GetDialogButtons() const override;
-  base::string16 GetDialogButtonLabel(ui::DialogButton button) const override;
-  int GetDefaultDialogButton() const override;
+  void AddedToWidget() override;
+
+  // views::DialogDelegate:
+  views::View* CreateExtraView() override;
   bool Cancel() override;
   bool Accept() override;
-  ui::ModalType GetModalType() const override;
-  views::View* CreateExtraView() override;
+  int GetDialogButtons() const override;
+  int GetDefaultDialogButton() const override;
+  base::string16 GetDialogButtonLabel(ui::DialogButton button) const override;
   bool IsDialogButtonEnabled(ui::DialogButton button) const override;
+
+  // views::WidgetDelegate:
   ax::mojom::Role GetAccessibleWindowRole() const override;
   base::string16 GetAccessibleWindowTitle() const override;
+  ui::ModalType GetModalType() const override;
 
   // views::LinkListener:
   void LinkClicked(views::Link* source, int event_flags) override;