Do not show permission bubble when browser is not active

chrome/browser/permissions/permission_request_manager.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/permissions/permission_request_manager.h"
 
 #include <algorithm>
 
 #include "base/command_line.h"
 #include "base/feature_list.h"
@@ skipping 61 matching lines @@
 
 // PermissionRequestManager ----------------------------------------------------
 
 DEFINE_WEB_CONTENTS_USER_DATA_KEY(PermissionRequestManager);
 
 PermissionRequestManager::PermissionRequestManager(
     content::WebContents* web_contents)
     : 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),
       weak_factory_(this) {}
 
 PermissionRequestManager::~PermissionRequestManager() {
   if (view_ != NULL)
     view_->SetDelegate(NULL);
 
   for (PermissionRequest* request : requests_)
@@ skipping 273 matching lines @@
   content::BrowserThread::PostTask(
       content::BrowserThread::UI,
       FROM_HERE,
       base::Bind(&PermissionRequestManager::TriggerShowBubble,
                  weak_factory_.GetWeakPtr()));
 }
 
 void PermissionRequestManager::TriggerShowBubble() {
   if (!view_)
     return;
+  if (!browser_visible_)
+    return;
   if (IsBubbleVisible())
     return;
   if (!main_frame_has_fully_loaded_)
     return;
   if (requests_.empty() && queued_requests_.empty() &&
       queued_frame_requests_.empty()) {
     return;
   }
 
   if (requests_.empty()) {
@@ skipping 116 matching lines @@
 }
 
 void PermissionRequestManager::AddObserver(Observer* observer) {
   observer_list_.AddObserver(observer);
 }
 
 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();
 }
 
 void PermissionRequestManager::DoAutoResponseForTesting() {
   switch (auto_response_for_test_) {
     case ACCEPT_ALL:
       Accept();
       break;
     case DENY_ALL:
       Deny();
       break;
     case DISMISS:
       Closing();
       break;
     case NONE:
       NOTREACHED();
   }
 }