Fix the print preview dialog frame.

My r275303 mistakenly removed a function override.
(it was a reasonable change for an earlier patch set)

Restore ConstrainedWebDialogDelegateViewViews code.
(uses dialog frame views via CreateNonClientFrameView)

BUG=381524
TEST=Print preview dialog frame is back to normal.
TBR=sky@chromium.org

Review URL: https://codereview.chromium.org/317243004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@275559 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/ui/views/constrained_web_dialog_delegate_views.cc

@@ -11,7 +11,7 @@
 #include "ui/views/controls/webview/unhandled_keyboard_event_handler.h"
 #include "ui/views/controls/webview/webview.h"
 #include "ui/views/widget/widget.h"
-#include "ui/views/widget/widget_delegate.h"
+#include "ui/views/window/dialog_delegate.h"
 #include "ui/web_dialogs/web_dialog_delegate.h"
 #include "ui/web_dialogs/web_dialog_ui.h"
 
@@ -117,6 +117,10 @@ class ConstrainedWebDialogDelegateViewViews
   virtual views::View* GetContentsView() OVERRIDE {
     return this;
   }
+  virtual views::NonClientFrameView* CreateNonClientFrameView(
+      views::Widget* widget) OVERRIDE {
+    return views::DialogDelegate::CreateDialogFrameView(widget);
+  }
   virtual bool ShouldShowCloseButton() const OVERRIDE {
     // No close button if the dialog doesn't want a title bar.
     return impl_->GetWebDialogDelegate()->ShouldShowDialogTitle();