Added auto closing to shields onboarding bubble

fix brave/brave-browser#34802

browser/ui/views/brave_help_bubble/brave_help_bubble_host_view.cc

@@ -25,6 +25,8 @@ namespace {
 constexpr int kWidth = 60;
 constexpr int kHeight = 60;
 
+constexpr base::TimeDelta kBubbleAutoClosingIntervalInSec = base::Seconds(15);
+
 // The points here are defined as start and end points of the gradient,
 // associated with an entire rect
 constexpr SkPoint kPts[] = {{0, 0}, {kWidth, kHeight}};
@@ -116,6 +118,11 @@ bool BraveHelpBubbleHostView::Show() {
   UpdatePosition();
   SetVisible(true);
 
+  bubble_auto_closing_timer_.Start(
+      FROM_HERE, kBubbleAutoClosingIntervalInSec,
+      base::BindOnce(&BraveHelpBubbleHostView::Hide,
+                     weak_factory_.GetWeakPtr()));
+
   if (gfx::Animation::ShouldRenderRichAnimation()) {
     SchedulePulsingAnimation(layer());
   }
@@ -205,6 +212,20 @@ void BraveHelpBubbleHostView::OnWidgetDestroying(views::Widget* widget) {
   host_widget_observation_.Reset();
 }
 
+void BraveHelpBubbleHostView::OnWidgetActivationChanged(views::Widget* widget,
+                                                        bool active) {
+  if (help_bubble_ != widget) {
+    return;
+  }
+
+  if (active) {
+    // Initially, bubble is launched in inactive state.
+    // If user activates it explicitely, we don't need to close it by timer.
+    // Instead, bubble will be closed when it goes inactive state later.
+    bubble_auto_closing_timer_.Stop();
+  }
+}
+
 void BraveHelpBubbleHostView::OnTrackedElementActivated(
     ui::TrackedElement* element) {
   Hide();

browser/ui/views/brave_help_bubble/brave_help_bubble_host_view.h

@@ -9,6 +9,7 @@
 #include <memory>
 #include <string>
 
+#include "base/timer/timer.h"
 #include "brave/browser/ui/views/brave_help_bubble/brave_help_bubble_delegate_view.h"
 #include "ui/views/interaction/element_tracker_views.h"
 #include "ui/views/view.h"
@@ -47,12 +48,16 @@ class BraveHelpBubbleHostView : public views::View,
   // views::WidgetObserver:
   void OnWidgetBoundsChanged(views::Widget* widget, const gfx::Rect&) override;
   void OnWidgetDestroying(views::Widget* widget) override;
+  void OnWidgetActivationChanged(views::Widget* widget, bool active) override;
 
   void OnTrackedElementActivated(ui::TrackedElement* element);
 
   std::string text_;
   raw_ptr<views::View> tracked_element_ = nullptr;
   raw_ptr<views::Widget> help_bubble_ = nullptr;
+
+  // Bubble will be closed if user doesn't interact with it for some time.
+  base::OneShotTimer bubble_auto_closing_timer_;
   ui::ElementTracker::Subscription activated_subscription_;
   base::ScopedObservation<views::View, views::ViewObserver>
       tracked_view_observation_{this};