Have MixedContentChecker and ProgressTracker keep a LocalFrame Member.

Source/core/loader/FrameLoader.h

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) Research In Motion Limited 2009. All rights reserved.
  * Copyright (C) 2011 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:
  *
@@ skipping 208 matching lines @@
     void scheduleCheckCompleted();
 
     RawPtrWillBeMember<LocalFrame> m_frame;
 
     // FIXME: These should be OwnPtr<T> to reduce build times and simplify
     // header dependencies unless performance testing proves otherwise.
     // Some of these could be lazily created for memory savings on devices.
     mutable FrameLoaderStateMachine m_stateMachine;
     mutable MixedContentChecker m_mixedContentChecker;
 
-    OwnPtr<ProgressTracker> m_progressTracker;
+    OwnPtrWillBeMember<ProgressTracker> m_progressTracker;
 
     FrameState m_state;
     FrameLoadType m_loadType;
 
     // Document loaders for the three phases of frame loading. Note that while
     // a new request is being loaded, the old document loader may still be referenced.
     // E.g. while a new request is in the "policy" state, the old document loader may
     // be consulted in particular as it makes sense to imply certain settings on the new loader.
     RefPtr<DocumentLoader> m_documentLoader;
     RefPtr<DocumentLoader> m_provisionalDocumentLoader;
@@ skipping 26 matching lines @@
 
     bool m_didAccessInitialDocument;
     Timer<FrameLoader> m_didAccessInitialDocumentTimer;
 
     SandboxFlags m_forcedSandboxFlags;
 };
 
 } // namespace blink
 
 #endif // FrameLoader_h