Tab Search: close tab search bubble after closing current active tab

This changes fixed the weird focus collision bug on Linux.
Similar patterns can be found in HatsBubbleView and ProfileMenuViewBase.

Bug: 1139028,1099917
Change-Id: I4703f631216584feecf117b6a1901fbccfb14e5f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2499086Reviewed-by: Thomas Lukaszewicz <tluk@chromium.org>
Commit-Queue: Yuheng Huang <yuhengh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#821452}

chrome/browser/ui/views/tab_search/tab_search_bubble_view.cc

@@ -6,6 +6,7 @@
 
 #include "base/metrics/histogram_functions.h"
 #include "chrome/browser/extensions/chrome_extension_web_contents_observer.h"
+#include "chrome/browser/ui/browser_list.h"
 #include "chrome/browser/ui/webui/tab_search/tab_search_ui.h"
 #include "chrome/common/webui_url_constants.h"
 #include "ui/views/controls/webview/webview.h"
@@ -23,7 +24,8 @@ views::Widget* TabSearchBubbleView::CreateTabSearchBubble(
 TabSearchBubbleView::TabSearchBubbleView(
     content::BrowserContext* browser_context,
     views::View* anchor_view)
-    : WebBubbleDialogView(browser_context, anchor_view) {
+    : WebBubbleDialogView(browser_context, anchor_view),
+      close_bubble_helper_(this, BrowserList::GetInstance()->GetLastActive()) {
   extensions::ChromeExtensionWebContentsObserver::CreateForWebContents(
       web_view()->GetWebContents());
 }

chrome/browser/ui/views/tab_search/tab_search_bubble_view.h

@@ -7,6 +7,7 @@
 
 #include "base/scoped_observer.h"
 #include "base/timer/elapsed_timer.h"
+#include "chrome/browser/ui/views/close_bubble_on_tab_activation_helper.h"
 #include "ui/views/controls/webview/web_bubble_dialog_view.h"
 
 namespace views {
@@ -56,6 +57,8 @@ class TabSearchBubbleView : public views::WebBubbleDialogView,
 
   ScopedObserver<views::Widget, views::WidgetObserver> observed_bubble_widget_{
       this};
+
+  CloseBubbleOnTabActivationHelper close_bubble_helper_;
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_TAB_SEARCH_TAB_SEARCH_BUBBLE_VIEW_H_