Improving CanvasPixelArray polyfill for Android
Merge pull request #5004 from CodingFabian/issue-5002

Improving CanvasPixelArray polyfill for Android
Memory optimzation for constructPath
Added units for lengths
Merge pull request #5000 from pramodhkp/memop

[SVG] Optimization of constructPath & Adds unit lengths
Merge branch 'master' of https://github.com/mozilla/pdf.js

* 'master' of https://github.com/mozilla/pdf.js:
  Added units for lengths
  Memory optimzation for constructPath
  Improving CanvasPixelArray polyfill for Android