Change the responsiveness field name in gecko and processed profile format

[canova]

This is the front-end changes of Bug 1595482.

cc @jesup

[codecov]

Codecov Report

Merging #2303 into master will decrease coverage by 0.01%.
The diff coverage is 87.5%.

@@            Coverage Diff             @@
##           master    #2303      +/-   ##
==========================================
- Coverage   86.13%   86.11%   -0.02%     
==========================================
  Files         204      204              
  Lines       15004    15019      +15     
  Branches     3766     3772       +6     
==========================================
+ Hits        12923    12934      +11     
- Misses       1909     1913       +4     
  Partials      172      172

Impacted Files	Coverage Δ
src/profile-logic/profile-data.js	93.91% <100%> (+0.03%)	⬆️
src/profile-logic/import/chrome.js	93.28% <100%> (ø)	⬆️
src/profile-logic/marker-data.js	89.93% <100%> (+0.06%)	⬆️
src/profile-logic/comparison.js	91.91% <100%> (ø)	⬆️
src/test/fixtures/profiles/processed-profile.js	97.97% <100%> (ø)	⬆️
src/profile-logic/js-tracer.js	88.98% <100%> (ø)	⬆️
src/profile-logic/data-structures.js	94.73% <66.66%> (-5.27%)	⬇️
src/profile-logic/process-profile.js	93.63% <71.42%> (-0.34%)	⬇️

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[canova]

hey @gregtatum, updated the code. Could you take a look at it now?

[gregtatum]

Thanks for the earlier changes. This looks good to me. I left an optional comment on the throws, but I'll leave it up to you, as the author, plus a few smaller comments.