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 662c976fb92e9a545fc4601f05b16d521052263f..576a4fae8116a1d76a2752353c1851b754075763 100644
--- a/chrome/browser/ui/views/constrained_web_dialog_delegate_views.cc
+++ b/chrome/browser/ui/views/constrained_web_dialog_delegate_views.cc
@@ -237,11 +237,9 @@ class ConstrainedWebDialogDelegateViewViews
   void DocumentOnLoadCompletedInMainFrame() override {
     if (!max_size_.IsEmpty()) {
       EnableAutoResize();
-      if (initiator_observer_.web_contents()) {
-        web_modal::WebContentsModalDialogManager::FromWebContents(
-            initiator_observer_.web_contents())
-            ->ShowModalDialog(GetWidget()->GetNativeWindow());
-      }
+      if (initiator_observer_.web_contents())
+        constrained_window::ShowModalDialog(GetWidget()->GetNativeWindow(),
+                                            initiator_observer_.web_contents());
     }
   }