Split the two paths in PDFImage.resize into separate helper functions, placed in colorspace.js and image.js

[Snuffleupagus]

Re: issue #6777.

@yurydelendik I've taken a stab at implementing what you suggested on IRC yesterday. Is this approximately what you had in mind?

[yurydelendik]

Yes, this looks right. Please notice that dest is present for resizeRgbImage and not present for resizeImageMask -- this can be optimized too. (Remove also COMPONENTS from resizeImageMask)

Looks good with the changes above and tests pass. Thank you.

[Snuffleupagus]

/botio test

[pdfjsbot]

From: Bot.io (Linux)

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Received

Command cmd_test from @Snuffleupagus received. Current queue size: 0

Live output at: http://107.21.233.14:8877/106eb605fa52251/output.txt

[pdfjsbot]

From: Bot.io (Windows)

---

Received

Command cmd_test from @Snuffleupagus received. Current queue size: 0

Live output at: http://107.22.172.223:8877/7f482ba6a2cab6b/output.txt

[pdfjsbot]

From: Bot.io (Windows)

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Success

Full output at http://107.22.172.223:8877/7f482ba6a2cab6b/output.txt

Total script time: 20.32 mins

• Font tests: Passed
• Unit tests: Passed
• Regression tests: Passed

[pdfjsbot]

From: Bot.io (Linux)

---

Success

Full output at http://107.21.233.14:8877/106eb605fa52251/output.txt

Total script time: 22.46 mins

• Font tests: Passed
• Unit tests: Passed
• Regression tests: Passed

[yurydelendik]

"+74 −79" even with comments 👍

Thank you for the patch.