Do not show permission bubble when browser is not active

chrome/browser/permissions/permission_request_manager.cc

Index: chrome/browser/permissions/permission_request_manager.cc
diff --git a/chrome/browser/permissions/permission_request_manager.cc b/chrome/browser/permissions/permission_request_manager.cc
index 1ed90638f96563b93e44daf7524b4e9583c078b0..341f4a34f7e4911117eff761834ab2bfb8b03e11 100644
--- a/chrome/browser/permissions/permission_request_manager.cc
+++ b/chrome/browser/permissions/permission_request_manager.cc
@@ -79,6 +79,7 @@ PermissionRequestManager::PermissionRequestManager(
     : content::WebContentsObserver(web_contents),
       view_factory_(base::Bind(&PermissionPrompt::Create)),
       view_(nullptr),
+      browser_visible_(true),
       main_frame_has_fully_loaded_(false),
       persist_(true),
       auto_response_for_test_(NONE),
@@ -372,6 +373,8 @@ void PermissionRequestManager::ScheduleShowBubble() {
 void PermissionRequestManager::TriggerShowBubble() {
   if (!view_)
     return;
+  if (!browser_visible_)
+    return;
   if (IsBubbleVisible())
     return;
   if (!main_frame_has_fully_loaded_)
@@ -508,6 +511,12 @@ void PermissionRequestManager::RemoveObserver(Observer* observer) {
   observer_list_.RemoveObserver(observer);
 }
 
+void PermissionRequestManager::OnBrowserVisibilityChanged(bool visible) {
+  browser_visible_ = visible;
+  if (visible)
+    ScheduleShowBubble();
+}
+
 void PermissionRequestManager::NotifyBubbleAdded() {
   for (Observer& observer : observer_list_)
     observer.OnBubbleAdded();