Oilpan: move NavigatorContentUtilsClients to the heap.

third_party/WebKit/Source/web/NavigatorContentUtilsClientImpl.h

Index: third_party/WebKit/Source/web/NavigatorContentUtilsClientImpl.h
diff --git a/third_party/WebKit/Source/web/NavigatorContentUtilsClientImpl.h b/third_party/WebKit/Source/web/NavigatorContentUtilsClientImpl.h
index c2f6dd65c23b35ac601ca357a3a92ca9cd6c3195..13a8e5361b83d9f43362ac1e487ba64c6a6236ae 100644
--- a/third_party/WebKit/Source/web/NavigatorContentUtilsClientImpl.h
+++ b/third_party/WebKit/Source/web/NavigatorContentUtilsClientImpl.h
@@ -6,6 +6,7 @@
 #define NavigatorContentUtilsClientImpl_h
 
 #include "modules/navigatorcontentutils/NavigatorContentUtilsClient.h"
+#include "platform/heap/Handle.h"
 #include "platform/weborigin/KURL.h"
 
 namespace blink {
@@ -14,17 +15,19 @@ class WebLocalFrameImpl;
 
 class NavigatorContentUtilsClientImpl final : public NavigatorContentUtilsClient {
 public:
-    static PassOwnPtr<NavigatorContentUtilsClientImpl> create(WebLocalFrameImpl*);
+    static PassOwnPtrWillBeRawPtr<NavigatorContentUtilsClientImpl> create(WebLocalFrameImpl*);
     ~NavigatorContentUtilsClientImpl() override { }
 
     void registerProtocolHandler(const String& scheme, const KURL&, const String& title) override;
     CustomHandlersState isProtocolHandlerRegistered(const String& scheme, const KURL&) override;
     void unregisterProtocolHandler(const String& scheme, const KURL&) override;
 
+    DECLARE_VIRTUAL_TRACE();
+
 private:
     explicit NavigatorContentUtilsClientImpl(WebLocalFrameImpl*);
 
-    WebLocalFrameImpl* m_webFrame;
+    RawPtrWillBeMember<WebLocalFrameImpl> m_webFrame;
 };
 
 } // namespace blink