Push API: Don't require notification if tab is visible.

content/browser/web_contents/web_contents_view_aura.cc

 // Copyright (c) 2012 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 "content/browser/web_contents/web_contents_view_aura.h"
 
 #include "base/auto_reset.h"
 #include "base/command_line.h"
 #include "base/files/file_util.h"
 #include "base/metrics/histogram.h"
@@ skipping 1613 matching lines @@
     // show garbage.
     // However - the page load mechanism requires an activation call through a
     // visibility call to (re)load.
     if (visible) {
       is_or_was_visible_ = true;
       web_contents_->WasShown();
     }
     return;
   }
   if (visible) {
-    if (!web_contents_->should_normally_be_visible())
+    if (!web_contents_->IsHiddenIgnoringCapturing())
       web_contents_->WasShown();
   } else {
-    if (web_contents_->should_normally_be_visible())
+    if (web_contents_->IsHiddenIgnoringCapturing())
       web_contents_->WasHidden();
   }
 }
 
 }  // namespace content