Broke out layout metric information from ViewsDelegate to LayoutProvider

chrome/browser/ui/views/chrome_browser_main_extra_parts_views.h

Index: chrome/browser/ui/views/chrome_browser_main_extra_parts_views.h
diff --git a/chrome/browser/ui/views/chrome_browser_main_extra_parts_views.h b/chrome/browser/ui/views/chrome_browser_main_extra_parts_views.h
index 3b68e39e37c0f04b64894ac43390e01e43010a38..ad1b89d5bb838c077f82003e5a1f8e3eed6db846 100644
--- a/chrome/browser/ui/views/chrome_browser_main_extra_parts_views.h
+++ b/chrome/browser/ui/views/chrome_browser_main_extra_parts_views.h
@@ -9,6 +9,7 @@
 
 #include "base/macros.h"
 #include "chrome/browser/chrome_browser_main_extra_parts.h"
+#include "ui/views/layout/views_layout_delegate.h"
 
 namespace ui {
 class InputDeviceClient;
@@ -41,6 +42,7 @@ class ChromeBrowserMainExtraPartsViews : public ChromeBrowserMainExtraParts {
 
  private:
   std::unique_ptr<views::ViewsDelegate> views_delegate_;
+  std::unique_ptr<views::ViewsLayoutDelegate> layout_delegate_;
 
 #if defined(USE_AURA)
   // Not created when running in ash::Config::MUS.