Oilpan: move TextFinder to the heap.

Source/web/WebLocalFrameImpl.h

 /*
  * Copyright (C) 2009 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 318 matching lines @@
     // The embedder retains a reference to the WebCore LocalFrame while it is active in the DOM. This
     // reference is released when the frame is removed from the DOM or the entire page is closed.
     // FIXME: These will need to change to WebFrame when we introduce WebFrameProxy.
     RefPtrWillBeMember<LocalFrame> m_frame;
 
     WebFrameClient* m_client;
     WebPermissionClient* m_permissionClient;
     OwnPtr<SharedWorkerRepositoryClientImpl> m_sharedWorkerRepositoryClient;
 
     // Will be initialized after first call to find() or scopeStringMatches().
-    OwnPtr<TextFinder> m_textFinder;
+    OwnPtrWillBeMember<TextFinder> m_textFinder;
 
     // Valid between calls to BeginPrint() and EndPrint(). Containts the print
     // information. Is used by PrintPage().
     OwnPtrWillBeMember<ChromePrintContext> m_printContext;
 
     // Stores the additional input events offset and scale when device metrics emulation is enabled.
     IntSize m_inputEventsOffsetForEmulation;
     float m_inputEventsScaleFactorForEmulation;
 
     UserMediaClientImpl m_userMediaClientImpl;
@@ skipping 10 matching lines @@
     GC_PLUGIN_IGNORE("340522")
     Persistent<WebLocalFrameImpl> m_selfKeepAlive;
 #endif
 };
 
 DEFINE_TYPE_CASTS(WebLocalFrameImpl, WebFrame, frame, frame->isWebLocalFrame(), frame.isWebLocalFrame());
 
 } // namespace blink
 
 #endif