WebUI TaskManager: Add method to set minimum window size on HTMLDialog.

ui/views/widget/widget.cc

Index: ui/views/widget/widget.cc
diff --git a/ui/views/widget/widget.cc b/ui/views/widget/widget.cc
index 6ffedc34659861bf114b0130ae36a45935161d8a..72a207cccd5d9f76f22b52f0cf03631a7813c252 100644
--- a/ui/views/widget/widget.cc
+++ b/ui/views/widget/widget.cc
@@ -452,6 +452,10 @@ void Widget::SetSize(const gfx::Size& size) {
   native_widget_->SetSize(size);
 }
 
+void Widget::CenterWindow(const gfx::Size& size) {
+  native_widget_->CenterWindow(size);
+}
+
 void Widget::SetBoundsConstrained(const gfx::Rect& bounds) {
   gfx::Rect work_area =
       gfx::Screen::GetMonitorWorkAreaNearestPoint(bounds.origin());