Revert of [Extensions] Don't count bubble dismissal from focus loss as acknowledgment

ui/views/bubble/bubble_frame_view.cc

Index: ui/views/bubble/bubble_frame_view.cc
diff --git a/ui/views/bubble/bubble_frame_view.cc b/ui/views/bubble/bubble_frame_view.cc
index c9fcd40138cb4e62daf92979745e7faa28238323..88025b04b54a3f8f4b1ed59a39d5c71226a0f530 100644
--- a/ui/views/bubble/bubble_frame_view.cc
+++ b/ui/views/bubble/bubble_frame_view.cc
@@ -70,8 +70,7 @@
       title_icon_(new views::ImageView()),
       title_(nullptr),
       close_(nullptr),
-      titlebar_extra_view_(nullptr),
-      close_button_clicked_(false) {
+      titlebar_extra_view_(nullptr) {
   AddChildView(title_icon_);
 
   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
@@ -322,10 +321,8 @@
 }
 
 void BubbleFrameView::ButtonPressed(Button* sender, const ui::Event& event) {
-  if (sender == close_) {
-    close_button_clicked_ = true;
+  if (sender == close_)
     GetWidget()->Close();
-  }
 }
 
 void BubbleFrameView::SetBubbleBorder(scoped_ptr<BubbleBorder> border) {