Add billing address as a mandatory field of Payments credit cards.

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 402d6673a1b636747967ddb08d8a7753337f72a7..28a63f679d30f9ff24ed0a774a07f0bac37b136c 100644
--- a/chrome/browser/ui/views/payments/editor_view_controller.h
+++ b/chrome/browser/ui/views/payments/editor_view_controller.h
@@ -15,6 +15,7 @@
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/strings/string16.h"
+#include "chrome/browser/ui/views/payments/payment_request_dialog_view.h"
 #include "chrome/browser/ui/views/payments/payment_request_sheet_controller.h"
 #include "chrome/browser/ui/views/payments/validation_delegate.h"
 #include "components/autofill/core/browser/field_types.h"
@@ -37,14 +38,13 @@ namespace payments {
 
 class PaymentRequestSpec;
 class PaymentRequestState;
-class PaymentRequestDialogView;
 class ValidatingCombobox;
 class ValidatingTextfield;
 
 // Field definition for an editor field, used to build the UI.
 struct EditorField {
   enum class LengthHint : int { HINT_LONG, HINT_SHORT };
-  enum class ControlType : int { TEXTFIELD, COMBOBOX };
+  enum class ControlType : int { TEXTFIELD, COMBOBOX, CUSTOMFIELD };
 
   EditorField(autofill::ServerFieldType type,
               base::string16 label,
@@ -89,9 +89,13 @@ class EditorViewController : public PaymentRequestSheetController,
       std::map<const EditorField, views::Label*, EditorField::Compare>;
 
   // Does not take ownership of the arguments, which should outlive this object.
+  // |back_navigation_type| identifies what sort of back navigation should be
+  // done when editing is successful. This is independent of the back arrow
+  // which always goes back one step.
   EditorViewController(PaymentRequestSpec* spec,
                        PaymentRequestState* state,
-                       PaymentRequestDialogView* dialog);
+                       PaymentRequestDialogView* dialog,
+                       BackNavigationType back_navigation_type);
   ~EditorViewController() override;
 
   // Will display |error_message| alongside the input field represented by
@@ -104,6 +108,8 @@ class EditorViewController : public PaymentRequestSheetController,
 
  protected:
   virtual std::unique_ptr<views::View> CreateHeaderView() = 0;
+  virtual std::unique_ptr<views::View> CreateCustomFieldView(
+      autofill::ServerFieldType type) = 0;
   // Returns the field definitions used to build the UI.
   virtual std::vector<EditorField> GetFieldDefinitions() = 0;
   virtual base::string16 GetInitialValueForType(
@@ -131,11 +137,11 @@ class EditorViewController : public PaymentRequestSheetController,
   // UpdateEditorView.
   virtual void UpdateEditorView();
 
- private:
   // PaymentRequestSheetController:
   void ButtonPressed(views::Button* sender, const ui::Event& event) override;
   views::View* GetFirstFocusedView() override;
 
+ private:
   // views::TextfieldController:
   void ContentsChanged(views::Textfield* sender,
                        const base::string16& new_contents) override;
@@ -162,6 +168,9 @@ class EditorViewController : public PaymentRequestSheetController,
   // The first label in the editor, used to set the initial focus.
   views::View* first_field_view_;
 
+  // Identifies where to go back when the editing completes successfully.
+  BackNavigationType back_navigation_type_;
+
   DISALLOW_COPY_AND_ASSIGN(EditorViewController);
 };