Move web modal dialog manager files into the constrained_window component.

chrome/browser/ui/views/constrained_web_dialog_delegate_views.cc

Index: chrome/browser/ui/views/constrained_web_dialog_delegate_views.cc
diff --git a/chrome/browser/ui/views/constrained_web_dialog_delegate_views.cc b/chrome/browser/ui/views/constrained_web_dialog_delegate_views.cc
index de8ef012e172b6ff4c8387c266011bfab0f08ab4..1f6302730572dbd5ca30c14391fd545ce5d555f0 100644
--- a/chrome/browser/ui/views/constrained_web_dialog_delegate_views.cc
+++ b/chrome/browser/ui/views/constrained_web_dialog_delegate_views.cc
@@ -238,9 +238,8 @@ class ConstrainedWebDialogDelegateViewViews
   }
   void DocumentOnLoadCompletedInMainFrame() override {
     if (!max_size_.IsEmpty() && initiator_observer_.web_contents()) {
-      web_modal::WebContentsModalDialogManager::FromWebContents(
-          initiator_observer_.web_contents())
-          ->ShowModalDialog(GetWidget()->GetNativeWindow());
+      constrained_window::ShowModalDialog(GetWidget()->GetNativeWindow(),
+                                          initiator_observer_.web_contents());
     }
   }