Marius Reimer ddc3471f88 set blob as default XMLHttpRequest header response type if supported (#22063)
Summary:
This is a problem that is discussed in issue #21092

Related issues: #21851 #19717

Found the code to eventually fix this issue [here](899b155746/fetch.js (L486))

- [x] Fetching an image locally and check if the blob is there, as well as its size > 0.

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[GENERAL] [ENHANCEMENT] [whatwg-fetch] - set blob as default XMLHttpRequest header response type if supported
Pull Request resolved: https://github.com/facebook/react-native/pull/22063

Differential Revision: D13408797

Pulled By: cpojer

fbshipit-source-id: 9822d5a7e24bacd72838f3fc9a61b1a97b44484b
2018-12-10 16:59:20 -08:00
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