Do not send blur to the original window when JS popup shows.

content/browser/renderer_host/render_widget_host_view_mac.mm

Index: content/browser/renderer_host/render_widget_host_view_mac.mm
diff --git a/content/browser/renderer_host/render_widget_host_view_mac.mm b/content/browser/renderer_host/render_widget_host_view_mac.mm
index f2c270f4e98538aa89fa4d6c538509d511e509ab..c79c089e15058d1e60d8b0aebd48ac641ff74c13 100644
--- a/content/browser/renderer_host/render_widget_host_view_mac.mm
+++ b/content/browser/renderer_host/render_widget_host_view_mac.mm
@@ -1621,12 +1621,6 @@ void RenderWidgetHostViewMac::ShutdownHost() {
 void RenderWidgetHostViewMac::SetActive(bool active) {
   if (render_widget_host_) {
     render_widget_host_->SetActive(active);
-    if (active) {
-      if (HasFocus())
-        render_widget_host_->Focus();
-    } else {
-      render_widget_host_->Blur();
-    }
   }
   if (HasFocus())
     SetTextInputActive(active);