PageVisibility API: Ensure bubbling events are generated

third_party/WebKit/Source/core/dom/Document.cpp

Index: third_party/WebKit/Source/core/dom/Document.cpp
diff --git a/third_party/WebKit/Source/core/dom/Document.cpp b/third_party/WebKit/Source/core/dom/Document.cpp
index c24eb4170bbab3d22b2581b842b399250f664c4c..da9853e9daeb00e1da68f901fbad55c94c2c7e26 100644
--- a/third_party/WebKit/Source/core/dom/Document.cpp
+++ b/third_party/WebKit/Source/core/dom/Document.cpp
@@ -1377,9 +1377,11 @@ bool Document::hidden() const
 
 void Document::didChangeVisibilityState()
 {
-    dispatchEvent(Event::create(EventTypeNames::visibilitychange));
+    // 'visibilitychange' event should bubble
+    // See: http://www.w3.org/TR/page-visibility/#sec-processing-model

[dtapuska, 2015/11/13 00:26:58]

I don't think we need the comments here; it is pretty obvious that it bubbles.

+    dispatchEvent(Event::createBubble(EventTypeNames::visibilitychange));
     // Also send out the deprecated version until it can be removed.
-    dispatchEvent(Event::create(EventTypeNames::webkitvisibilitychange));
+    dispatchEvent(Event::createBubble(EventTypeNames::webkitvisibilitychange));
 
     PageVisibilityState state = pageVisibilityState();
     for (DocumentVisibilityObserver* observer : m_visibilityObservers)