Communicate whether passive event listeners exist to cc.

third_party/WebKit/Source/core/loader/FrameLoader.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008 Alp Toker <alp@atoker.com>
  * Copyright (C) Research In Motion Limited 2009. All rights reserved.
  * Copyright (C) 2011 Kris Jordan <krisjordan@gmail.com>
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ skipping 1069 matching lines @@
 
     // Check if the destination page is allowed to access the previous page's timing information.
     if (m_frame->document()) {
         RefPtr<SecurityOrigin> securityOrigin = SecurityOrigin::create(m_provisionalDocumentLoader->request().url());
         m_provisionalDocumentLoader->timing().setHasSameOriginAsPreviousDocument(securityOrigin->canRequest(m_frame->document()->url()));
     }
 
     if (!prepareForCommit())
         return;
 
-    if (isLoadingMainFrame())
-        m_frame->page()->chromeClient().needTouchEvents(false);
+    if (isLoadingMainFrame()) {
+        m_frame->page()->chromeClient().setEventListenerProperties(WebEventListenerClass::Touch, WebEventListenerProperties::Nothing);
+        m_frame->page()->chromeClient().setEventListenerProperties(WebEventListenerClass::MouseWheel, WebEventListenerProperties::Nothing);
+    }
 
     client()->transitionToCommittedForNewPage();
     m_frame->navigationScheduler().cancel();
     m_frame->editor().clearLastEditCommand();
 
     // If we are still in the process of initializing an empty document then
     // its frame is not in a consistent state for rendering, so avoid setJSStatusBarText
     // since it may cause clients to attempt to render the frame.
     if (!m_stateMachine.creatingInitialEmptyDocument()) {
         DOMWindow* window = m_frame->domWindow();
@@ skipping 448 matching lines @@
     // FIXME: We need a way to propagate insecure requests policy flags to
     // out-of-process frames. For now, we'll always use default behavior.
     if (!parentFrame->isLocalFrame())
         return nullptr;
 
     ASSERT(toLocalFrame(parentFrame)->document());
     return toLocalFrame(parentFrame)->document()->insecureNavigationsToUpgrade();
 }
 
 } // namespace blink