[Bugs] #4383 Browse UNSP: Browse: displaying PDF does not make zoom equal button insensitive

[Sugar Labs Bugs]

#4383: Browse: displaying PDF does not make zoom equal button insensitive
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    Reporter:  manuq                      |          Owner:  humitos    
        Type:  defect                     |         Status:  new        
    Priority:  Unspecified by Maintainer  |      Milestone:  1.0        
   Component:  Browse                     |        Version:  Unspecified
    Severity:  Unspecified                |       Keywords:             
Distribution:  Unspecified                |   Status_field:  Unconfirmed
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Comment(by humitos):

 Actually when you press it on a PDF tab you get this traceback:
 {{{
 Traceback (most recent call last):
   File "/home/humitos/Activities/Browse.activity/viewtoolbar.py", line 96,
 in __zoom_original_clicked_cb
     tabbed_view.props.current_browser.set_zoom_level(ZOOM_ORIGINAL)
 AttributeError: 'DummyBrowser' object has no attribute 'set_zoom_level'
 }}}

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Ticket URL: <http://bugs.sugarlabs.org/ticket/4383#comment:1>
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