Oilpan: move NavigatorContentUtilsClients to the heap.

third_party/WebKit/Source/modules/navigatorcontentutils/testing/NavigatorContentUtilsClientMock.h

Index: third_party/WebKit/Source/modules/navigatorcontentutils/testing/NavigatorContentUtilsClientMock.h
diff --git a/third_party/WebKit/Source/modules/navigatorcontentutils/testing/NavigatorContentUtilsClientMock.h b/third_party/WebKit/Source/modules/navigatorcontentutils/testing/NavigatorContentUtilsClientMock.h
index c3fed5205e99141e316c306490a16d76f2fc54d0..e8635461cd0ceed5622f154c1d12b4665c148fb9 100644
--- a/third_party/WebKit/Source/modules/navigatorcontentutils/testing/NavigatorContentUtilsClientMock.h
+++ b/third_party/WebKit/Source/modules/navigatorcontentutils/testing/NavigatorContentUtilsClientMock.h
@@ -6,6 +6,7 @@
 #define NavigatorContentUtilsClientMock_h
 
 #include "modules/navigatorcontentutils/NavigatorContentUtilsClient.h"
+#include "platform/heap/Handle.h"
 #include "wtf/HashSet.h"
 #include "wtf/text/WTFString.h"
 
@@ -16,7 +17,11 @@ class KURL;
 // Provides a mock object for the navigatorcontentutils client.
 class NavigatorContentUtilsClientMock final : public NavigatorContentUtilsClient {
 public:
-    NavigatorContentUtilsClientMock() { }
+    static PassOwnPtrWillBeRawPtr<NavigatorContentUtilsClientMock> create()
+    {
+        return adoptPtrWillBeNoop(new NavigatorContentUtilsClientMock);
+    }
+
     ~NavigatorContentUtilsClientMock() override { }
 
     virtual void registerProtocolHandler(const String& scheme, const KURL&, const String& title);
@@ -25,6 +30,8 @@ public:
     virtual void unregisterProtocolHandler(const String& scheme, const KURL&);
 
 private:
+    NavigatorContentUtilsClientMock() { }
+
     typedef struct {
         String scheme;
         KURL url;