[Test] have the provisional DocumentLoader protect itself

third_party/WebKit/Source/core/loader/DocumentLoader.h

Index: third_party/WebKit/Source/core/loader/DocumentLoader.h
diff --git a/third_party/WebKit/Source/core/loader/DocumentLoader.h b/third_party/WebKit/Source/core/loader/DocumentLoader.h
index f13f8d9266992d74a72e3342ebac2c18f565b334..08ba73e7e8582d412c9fae860d9f13759276fe74 100644
--- a/third_party/WebKit/Source/core/loader/DocumentLoader.h
+++ b/third_party/WebKit/Source/core/loader/DocumentLoader.h
@@ -145,6 +145,8 @@ public:
 
     Resource* startPreload(Resource::Type, FetchRequest&);
 
+    void setProtect(bool shouldProtect) { m_shouldProtect = shouldProtect; }
+
     DECLARE_VIRTUAL_TRACE();
 
 protected:
@@ -215,6 +217,8 @@ private:
 
     double m_timeOfLastDataReceived;
 
+    bool m_shouldProtect;
+
     PersistentWillBeMember<ApplicationCacheHost> m_applicationCacheHost;
 
     RefPtrWillBeMember<ContentSecurityPolicy> m_contentSecurityPolicy;