Don't zoom in TextFinder if autosizing is disabled

Source/core/layout/TextAutosizer.h

 /*
  * Copyright (C) 2013 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 47 matching lines @@
     {
         return adoptPtrWillBeNoop(new TextAutosizer(document));
     }
     static float computeAutosizedFontSize(float specifiedSize, float multiplier);
 
     void updatePageInfoInAllFrames();
     void updatePageInfo();
     void record(const LayoutBlock*);
     void destroy(const LayoutBlock*);
 
+    bool pageNeedsAutosizing() const;
+
     DECLARE_TRACE();
 
     class LayoutScope {
     public:
         explicit LayoutScope(LayoutBlock*);
         ~LayoutScope();
     protected:
         TextAutosizer* m_textAutosizer;
         LayoutBlock* m_block;
     };
@@ skipping 228 matching lines @@
     FingerprintMapper m_fingerprintMapper;
     Vector<RefPtr<ComputedStyle>> m_stylesRetainedDuringLayout;
     // FIXME: All frames should share the same m_pageInfo instance.
     PageInfo m_pageInfo;
     bool m_updatePageInfoDeferred;
 };
 
 } // namespace blink
 
 #endif // TextAutosizer_h