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

ui/views/bubble/bubble_frame_view.h

Index: ui/views/bubble/bubble_frame_view.h
diff --git a/ui/views/bubble/bubble_frame_view.h b/ui/views/bubble/bubble_frame_view.h
index 28750c3d5822e63188a9ee0c0985ef586ab9f2b3..b21215cb37d3fe777ea758f8d0b20b762e40bfae 100644
--- a/ui/views/bubble/bubble_frame_view.h
+++ b/ui/views/bubble/bubble_frame_view.h
@@ -84,8 +84,6 @@
                                    gfx::Size client_size,
                                    bool adjust_if_offscreen);
 
-  bool close_button_clicked() const { return close_button_clicked_; }
-
  protected:
   // Returns the available screen bounds if the frame were to show in |rect|.
   virtual gfx::Rect GetAvailableScreenBounds(const gfx::Rect& rect) const;
@@ -95,7 +93,6 @@
 
  private:
   FRIEND_TEST_ALL_PREFIXES(BubbleFrameViewTest, GetBoundsForClientView);
-  FRIEND_TEST_ALL_PREFIXES(BubbleDelegateTest, CloseReasons);
 
   // Mirrors the bubble's arrow location on the |vertical| or horizontal axis,
   // if the generated window bounds don't fit in the monitor bounds.
@@ -126,9 +123,6 @@
   // (x) close button.
   View* titlebar_extra_view_;
 
-  // Whether the close button was clicked.
-  bool close_button_clicked_;
-
   DISALLOW_COPY_AND_ASSIGN(BubbleFrameView);
 };