Adding new shipping address editor view to payment flow.

chrome/browser/ui/views/payments/editor_view_controller.h

Index: chrome/browser/ui/views/payments/editor_view_controller.h
diff --git a/chrome/browser/ui/views/payments/editor_view_controller.h b/chrome/browser/ui/views/payments/editor_view_controller.h
index 9cabb679721442f8b6fa2f36e700948e05392ce6..f4850c914a8b4ee19fdf905b68a5561bf5a8000b 100644
--- a/chrome/browser/ui/views/payments/editor_view_controller.h
+++ b/chrome/browser/ui/views/payments/editor_view_controller.h
@@ -125,6 +125,20 @@ class EditorViewController : public PaymentRequestSheetController,
   std::unique_ptr<views::Button> CreatePrimaryButton() override;
   std::unique_ptr<views::View> CreateExtraFooterView() override;
 
+ protected:
+  // The editor content view, owned by the client so the derived classes can
+  // refresh it when some user interactions cause layout changes.
+  std::unique_ptr<views::View> editor_view_;
+
+  // Update the editor view by removing all it's child views and recreating
+  // the input fields returned by GetFieldDefinitions. Note that
+  // CreateEditorView MUST have been called at least once before calling
+  // UpdateEditorView.
+  virtual void UpdateEditorView();
+
+  // views::ComboboxListener:
+  void OnPerformAction(views::Combobox* combobox) override;
+
  private:
   // PaymentRequestSheetController:
   void ButtonPressed(views::Button* sender, const ui::Event& event) override;
@@ -133,12 +147,9 @@ class EditorViewController : public PaymentRequestSheetController,
   void ContentsChanged(views::Textfield* sender,
                        const base::string16& new_contents) override;
 
-  // views::ComboboxListener:
-  void OnPerformAction(views::Combobox* combobox) override;
-
   // Creates the whole editor view to go within the editor dialog. It
   // encompasses all the input fields created by CreateInputField().
-  std::unique_ptr<views::View> CreateEditorView();
+  void CreateEditorView();
 
   // Adds some views to |layout|, to represent an input field and its labels.
   // |field| is the field definition, which contains the label and the hint