Changes:
#6464 Version 1.1.469
#6200 Refactor the previous history rewriting logic
#6450 Update the link location for the issue3115 test file
#6452 Replace the unavailable linked test-case for PR 2875 with a reduced test-case
#6482 Ensure that the baseTransform is always defined for TilingPatterns
#6468 Don't clear the canvas until re-rendering is finished when the scale or rotation is changed (issue 6467)
#6475 Tweak PDFPageView to reflect that this.annotationLayer is an AnnotationsLayerBuilder instance, instead of a DOM element (PR 5552 follow-up)
#6485 Prevent PartialEvaluator_buildFormXObject from failing if the Matrix or BBox contains indirect objects
#6411 Remove Parser_fetchIfRef since it's obsolete
#6489 Upstream changes from Bug 1202902 - Give loader scripts and XUL frame scripts a lexical scope that doesn't break everything?
#6473 Upstream the changes from Bug 1165272 - unify Get*CodebasePrincipal with createCodebasePrincipal in nsIScriptSecurityManager
#6501 Slightly improved getPage unit-tests
#6494 Add a unit-test for bug 1020226
#6491 Make XRef_indexObjects even more robust against bad PDF files, by checking for the existence of 'trailer' if 'xref' is not found
#6500 Add a (linked) test-case for PR 4897
#6499 Add a (linked) load test for issue 4387
#6503 Follow-up to PR 6489 - Upstream changes from Bug 1202902
#6502 Add a reduced load test-case for bug 1020858
#6476 Right-size the map array in PartialEvaluator_readToUnicode
#6520 [CRX] Call callback instead of onCompleted
#6434 Replace the unavailable linked test-case for issue 4436 with a reduced test-case
#6524 Fix a regression, from PR 5356, that breaks all scrolling in PresentationMode
#6481 Add a (linked) test-case for issue 4914
#6528 Ensure that Dict_getArray doesn't fail if xref in undefined (PR 6485 follow-up)
#6531 Fixes bluebeam password protection issue
#6532 Add unit-tests for PR 6531
#6540 Add unit-tests for the onPassword/onProgress callbacks of the API
#6550 Ignore operators that are known to be unsupported
#6543 Prevent getOperatorList from failing to correctly parse OPS.paintXObject for TilingPatterns that are missing some /Resources entries (issue 6541)
#6554 Add a reduced test-case for issue 4575
#6557 Pushing update reason for gh-pages and bower.
#6546 [api-minor] Adds controlled destruction of the worker.
#6555 Update version number for minor API changes.
#6558 Add a reduced test-case for issue 6151
#6560 Prevent TypeError: page is undefined when the document has been destroyed (PR 6546 follow-up)
#6562 Improved get fingerprint unit-tests (PR 5124)
#6566 Add a totalLength getter to OperatorList, since the length is zero after flushing
#6568 [api-minor] Add an optional param to DocumentInitParameters for speci…
#6552 Better CSS scaling for deviceRixelRatio != 1.
#6578 Ignore any pending data when worker is terminated.
#6576 Replace the linked test-case for issue 1293 with a reduced test-case
#6445 Fix exception when rotate page without a document
#6580 Find match count (rebase of #5051)
#6585 Replace the linked test-case for issue 3879 with a reduced test-case
#6587 Move VIEW_HISTORY_MEMORY constant to view_history.js
#6588 Better spacing in text layer.
#6586 Create a new indeterminate loading bar animation for the default viewer
#6591 Non/less flashing text layer during selection.
#6597 Ensure that the textLayer has the same dimensions as the canvasWrapper (issue 6596)
#6595 Uses document.currentScript for pdf.worker.js path.
#6590 Combines standalone chars into text groups.
#6601 Fixes incorrect PDF file font metrics.
#6602 Adding to authors
#6604 Add a reduced text test-case for issue 4665
#6607 Prevent readCmapTable from failing if the cmap is missing in TrueType fonts
#6608 Improve error message for non-existent local files
#6617 Correctly handle /FitH destinations with null as the parameter
#6620 Use random port in test webserver
#6318 For documents with different page sizes, ensure that the correct page becomes visible on load when e.g. the 'page' hash parameter was provided (bug 1191279, issue 6393)
#6600 Improve reliability of the test server
#6622 Remove mozcentral test files.
#6610 Replace the unavailable linked test-case for issue 2128 with a reduced test-case
#6625 Dispatch the pagerendered event when zooming is only done with CSS (issue 6463)
#6599 Generate better API documentation
#6629 Downgrade the JSHint version in order to fix linting failures on Travis
#6628 Ignore the /Mask entry in images unless its /ImageMask entry is explicitly set to true (issue 6621)
#6630 Fix minor capitalization issue in viewer