[Web Payments] Refactor sheet display to allow updating view content

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

Index: chrome/browser/ui/views/payments/editor_view_controller.cc
diff --git a/chrome/browser/ui/views/payments/editor_view_controller.cc b/chrome/browser/ui/views/payments/editor_view_controller.cc
index c87e63d4bc6b982567a4837434932968f157d417..88e5d7ba6e4d9a1b10530867fb2a2002bb6df8f6 100644
--- a/chrome/browser/ui/views/payments/editor_view_controller.cc
+++ b/chrome/browser/ui/views/payments/editor_view_controller.cc
@@ -53,29 +53,6 @@ EditorViewController::EditorViewController(PaymentRequestSpec* spec,
 
 EditorViewController::~EditorViewController() {}
 
-std::unique_ptr<views::View> EditorViewController::CreateView() {
-  std::unique_ptr<views::View> content_view = base::MakeUnique<views::View>();
-
-  views::BoxLayout* layout =
-      new views::BoxLayout(views::BoxLayout::kVertical, 0, 0, 0);
-  layout->set_main_axis_alignment(views::BoxLayout::MAIN_AXIS_ALIGNMENT_START);
-  layout->set_cross_axis_alignment(
-      views::BoxLayout::CROSS_AXIS_ALIGNMENT_STRETCH);
-  content_view->SetLayoutManager(layout);
-  // No insets. Child views below are responsible for their padding.
-
-  // An editor can optionally have a header view specific to it.
-  content_view->AddChildView(CreateHeaderView().release());
-
-  // The heart of the editor dialog: all the input fields with their labels.
-  content_view->AddChildView(CreateEditorView().release());
-
-  return CreatePaymentView(
-      CreateSheetHeaderView(
-          true, l10n_util::GetStringUTF16(GetViewHeaderTitleId()), this),
-      std::move(content_view));
-}
-
 void EditorViewController::DisplayErrorMessageForField(
     const EditorField& field,
     const base::string16& error_message) {
@@ -95,6 +72,22 @@ std::unique_ptr<views::Button> EditorViewController::CreatePrimaryButton() {
   return button;
 }
 
+void EditorViewController::FillContentView(views::View* content_view) {
+  views::BoxLayout* layout =
+      new views::BoxLayout(views::BoxLayout::kVertical, 0, 0, 0);
+  layout->set_main_axis_alignment(views::BoxLayout::MAIN_AXIS_ALIGNMENT_START);
+  layout->set_cross_axis_alignment(
+      views::BoxLayout::CROSS_AXIS_ALIGNMENT_STRETCH);
+  content_view->SetLayoutManager(layout);
+  // No insets. Child views below are responsible for their padding.
+
+  // An editor can optionally have a header view specific to it.
+  content_view->AddChildView(CreateHeaderView().release());
+
+  // The heart of the editor dialog: all the input fields with their labels.
+  content_view->AddChildView(CreateEditorView().release());
+}
+
 // Adds the "required fields" label in disabled text, to obtain this result.
 // +---------------------------------------------------------+
 // | "* indicates required fields"           | CANCEL | DONE |