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It's possible for docShell.printPreview.printPreview to throw (if we're attempting to print preview a XUL document, for example). If it throws, this can put printUtils.js in a funny state, since it's waiting to hear that print preview was successfully entered. This patch makes it possible for browser-content.js to inform the parent that printPreview failed, and for the parent to react appropriately. --HG-- extra : amend_source : cd6d89feb1b7e95a2a02452412580a4d00d52ad1 |
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