Oilpan: move page's ValidationMessageClient to the heap.

Source/web/ValidationMessageClientImpl.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 25 matching lines @@
 #include "public/web/WebViewClient.h"
 #include "web/WebViewImpl.h"
 #include "wtf/CurrentTime.h"
 
 using namespace WebCore;
 
 namespace blink {
 
 ValidationMessageClientImpl::ValidationMessageClientImpl(WebViewImpl& webView)
     : m_webView(webView)
-    , m_currentAnchor(0)
+    , m_currentAnchor(nullptr)
     , m_lastPageScaleFactor(1)
     , m_finishTime(0)
     , m_timer(this, &ValidationMessageClientImpl::checkAnchorStatus)
 {
 }
 
-PassOwnPtr<ValidationMessageClientImpl> ValidationMessageClientImpl::create(WebViewImpl& webView)
+PassOwnPtrWillBeRawPtr<ValidationMessageClientImpl> ValidationMessageClientImpl::create(WebViewImpl& webView)
 {
-    return adoptPtr(new ValidationMessageClientImpl(webView));
+    return adoptPtrWillBeNoop(new ValidationMessageClientImpl(webView));
 }
 
 ValidationMessageClientImpl::~ValidationMessageClientImpl()
 {
 }
 
 FrameView* ValidationMessageClientImpl::currentView()
 {
     return m_currentAnchor->document().view();
 }
@@ skipping 25 matching lines @@
     // FIXME: We should invoke checkAnchorStatus actively when layout, scroll,
     // or page scale change happen.
     m_timer.startRepeating(statusCheckInterval, FROM_HERE);
 }
 
 void ValidationMessageClientImpl::hideValidationMessage(const Element& anchor)
 {
     if (!m_currentAnchor || !isValidationMessageVisible(anchor))
         return;
     m_timer.stop();
-    m_currentAnchor = 0;
+    m_currentAnchor = nullptr;
     m_message = String();
     m_finishTime = 0;
     m_webView.client()->hideValidationMessage();
 }
 
 bool ValidationMessageClientImpl::isValidationMessageVisible(const Element& anchor)
 {
     return m_currentAnchor == &anchor;
 }
 
@@ skipping 27 matching lines @@
     m_lastPageScaleFactor = m_webView.pageScaleFactor();
     m_webView.client()->moveValidationMessage(newAnchorRect);
 }
 
 void ValidationMessageClientImpl::willBeDestroyed()
 {
     if (m_currentAnchor)
         hideValidationMessage(*m_currentAnchor);
 }
 
+void ValidationMessageClientImpl::trace(Visitor* visitor)
+{
+    visitor->trace(m_currentAnchor);
+    ValidationMessageClient::trace(visitor);
 }
+
+}