Make ARC's intent picker use the buttons insets.

ui/views/window/dialog_client_view.h

Index: ui/views/window/dialog_client_view.h
diff --git a/ui/views/window/dialog_client_view.h b/ui/views/window/dialog_client_view.h
index 01faf827be2b50b149051f8db97573ab99c766d3..d113747682e7f537c4f7e9732a858c1b532d552f 100644
--- a/ui/views/window/dialog_client_view.h
+++ b/ui/views/window/dialog_client_view.h
@@ -43,6 +43,7 @@ class VIEWS_EXPORT DialogClientView : public ClientView,
 
   // Update the dialog buttons to match the dialog's delegate.
   void UpdateDialogButtons();
+  void SetButtonRowInsets(const gfx::Insets& insets);
 
   // ClientView implementation:
   bool CanClose() override;
@@ -63,10 +64,6 @@ class VIEWS_EXPORT DialogClientView : public ClientView,
   // ButtonListener implementation:
   void ButtonPressed(Button* sender, const ui::Event& event) override;
 
-  void set_button_row_insets(const gfx::Insets& insets) {
-    button_row_insets_ = insets;
-  }
-
   void set_minimum_size(const gfx::Size& size) { minimum_size_ = size; }
 
  private: