[Firefox] Remove the FirefoxCom.requestSync method
#17338
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The return value is not, nor has it ever been, used for anything and we should thus be able to just send the message. Note that the responses are already handled by the "message" event listener registered above.
Despite the comment, I believe that changing this should be fine for two separate reasons: - The platform code has an "unload" event listener, see [this code](https://searchfox.org/mozilla-central/rev/edb2612db13e89f1c44ab95b1e4d4366c16eb9fb/toolkit/components/pdfjs/content/PdfStreamConverter.sys.mjs#533-538), that invokes the same method. Hence we should still be guaranteed that the relevant platform method will run. - The `FirefoxComDataRangeTransport.abort` method is never actually invoked in the Firefox PDF Viewer. Note that the [`PDFDataRangeTransport.abort` method](https://github.com/mozilla/pdf.js/blob/f4b396f6c88e951174879a52390fa89223326b36/src/display/api.js#L759) is only invoked via the [`PDFDataTransportStream.cancelAllRequests` method](https://github.com/mozilla/pdf.js/blob/f4b396f6c88e951174879a52390fa89223326b36/src/display/transport_stream.js#L167-L175), which in turn is only invoked via the [`WorkerTransport.destroy` method](https://github.com/mozilla/pdf.js/blob/f4b396f6c88e951174879a52390fa89223326b36/src/display/api.js#L2485-L2487). That method is invoked via the [`PDFDocumentLoadingTask.destroy` method](https://github.com/mozilla/pdf.js/blob/f4b396f6c88e951174879a52390fa89223326b36/src/display/api.js#L630), which in the viewer is only invoked via the [`PDFViewerApplication.close` method](https://github.com/mozilla/pdf.js/blob/f4b396f6c88e951174879a52390fa89223326b36/web/app.js#L919) which is never actually called in the Firefox PDF Viewer. All-in-all, given the existing platform code *and* the current viewer-implementation it should thus be safe to not wait for the "abortLoading" message to complete.
After the two previous commits, which removed the remaining call-sites, this method is no longer used and can thus be removed. As mentioned in the JSDocs for the now removed method, synchronous communication between the viewer and the platform code isn't really a good idea. Once this patch has landed in mozilla-central some additional clean-up of the platform code will also be possible.
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…js-reviewers,calixte After the changes in mozilla/pdf.js#17338, which landed in bug 1867213, we longer send any synchronous events from the viewer to the platform-code. Differential Revision: https://phabricator.services.mozilla.com/D195082
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…js-reviewers,calixte After the changes in mozilla/pdf.js#17338, which landed in bug 1867213, we longer send any synchronous events from the viewer to the platform-code. Differential Revision: https://phabricator.services.mozilla.com/D195082
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Dec 7, 2023
…js-reviewers,calixte After the changes in mozilla/pdf.js#17338, which landed in bug 1867213, we longer send any synchronous events from the viewer to the platform-code. Differential Revision: https://phabricator.services.mozilla.com/D195082 UltraBlame original commit: e4d00d2a30f40c896b99c6ab4f631a5d5f80e30d
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Dec 7, 2023
…js-reviewers,calixte After the changes in mozilla/pdf.js#17338, which landed in bug 1867213, we longer send any synchronous events from the viewer to the platform-code. Differential Revision: https://phabricator.services.mozilla.com/D195082 UltraBlame original commit: e4d00d2a30f40c896b99c6ab4f631a5d5f80e30d
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Dec 7, 2023
…js-reviewers,calixte After the changes in mozilla/pdf.js#17338, which landed in bug 1867213, we longer send any synchronous events from the viewer to the platform-code. Differential Revision: https://phabricator.services.mozilla.com/D195082 UltraBlame original commit: e4d00d2a30f40c896b99c6ab4f631a5d5f80e30d
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