Add done-clicked notification to content settings bubble model.

chrome/browser/ui/views/content_setting_bubble_contents.cc

Index: chrome/browser/ui/views/content_setting_bubble_contents.cc
diff --git a/chrome/browser/ui/views/content_setting_bubble_contents.cc b/chrome/browser/ui/views/content_setting_bubble_contents.cc
index a26d121674c397c455e44de7e61317118c71fe71..3840b00fa3586470f03722420e7354b1fdd2be24 100644
--- a/chrome/browser/ui/views/content_setting_bubble_contents.cc
+++ b/chrome/browser/ui/views/content_setting_bubble_contents.cc
@@ -288,6 +288,7 @@ void ContentSettingBubbleContents::Init() {
 void ContentSettingBubbleContents::ButtonPressed(views::Button* sender,
                                                  const views::Event& event) {
   if (sender == close_button_) {
+    content_setting_bubble_model_->OnDoneClicked();
     StartFade(false);
     return;
   }