Steps to reproduce:
1. Open user attached project "RequestAbortTest.zip"
2. Build for android
3. Press send
4. Press abort
5. The request never seems to abort

Expected: Upon clicking the abort button the text should say "Wait a second" and restart the connection after a second has passed
Actual: Upon clicking the abort button nothing happens

Reproduced on: 2018.1.0a6, 2017.3.0f1, 2017.2.0p4

Note: No testing pre-2017.2 because www.SendWebRequest was not available

Devices Under Test:
Samsung SM G930F*, OS:7.0, CPU:arm64-v8a, GPU:Mali-T880, Build:samsung/heroltexx/herolte:7.0/NRD90M/G930FXXS1DQHF:user/release-keys

Xiaomi MI NOTE Pro*, OS:7.0, CPU:arm64-v8a, GPU:Adreno (TM) 430, Build:Xiaomi/leo/leo:7.0/NRD90M/7.11.2:user/release-keys

Amazon KFMEWI (Fire HD 8 (2015))*, OS:5.1.1, CPU:armeabi-v7a, GPU:PowerVR Rogue G6200, Build:Amazon/full_thebes/thebes:5.1.1/LVY48F/32.5.7.9_user_579279320:user/release-keys