Add GrabPay to PaymentSheet

[tillh-stripe]

Summary

This pull request adds GrabPay for PaymentIntents.

Motivation

All. The. LPMs.

Testing

• Added tests
• Modified tests
• Manually verified

Screen recording

Recording

grabpay.mp4

Note: The icon will appear once the pay-server pull request is merged.

Changelog

[ADDED] PaymentSheet now supports GrabPay for PaymentIntents.

[github-actions]

Diffuse output:

OLD: paymentsheet-example-release-master.apk (signature: V1, V2)
NEW: paymentsheet-example-release-pr.apk (signature: V1, V2)

          │            compressed            │           uncompressed           
          ├───────────┬───────────┬──────────┼───────────┬───────────┬──────────
 APK      │ old       │ new       │ diff     │ old       │ new       │ diff     
──────────┼───────────┼───────────┼──────────┼───────────┼───────────┼──────────
      dex │   3.5 MiB │   3.5 MiB │   +136 B │   7.8 MiB │   7.8 MiB │   +208 B 
     arsc │   2.1 MiB │   2.1 MiB │   +724 B │   2.1 MiB │   2.1 MiB │   +724 B 
 manifest │   4.9 KiB │   4.9 KiB │      0 B │  24.1 KiB │  24.1 KiB │      0 B 
      res │ 866.6 KiB │ 867.5 KiB │   +886 B │   1.3 MiB │   1.3 MiB │ +1.5 KiB 
   native │   2.6 MiB │   2.6 MiB │      0 B │     6 MiB │     6 MiB │      0 B 
    asset │     3 MiB │     3 MiB │    +81 B │     3 MiB │     3 MiB │   +381 B 
    other │ 199.5 KiB │ 199.5 KiB │    +74 B │ 446.3 KiB │ 446.5 KiB │   +164 B 
──────────┼───────────┼───────────┼──────────┼───────────┼───────────┼──────────
    total │  12.3 MiB │  12.3 MiB │ +1.9 KiB │  20.7 MiB │  20.7 MiB │ +2.9 KiB 

 DEX     │ old   │ new   │ diff       
─────────┼───────┼───────┼────────────
   files │     1 │     1 │  0         
 strings │ 38245 │ 38246 │ +1 (+2 -1) 
   types │ 12640 │ 12640 │  0 (+0 -0) 
 classes │ 10664 │ 10664 │  0 (+0 -0) 
 methods │ 56024 │ 56024 │  0 (+0 -0) 
  fields │ 35129 │ 35130 │ +1 (+1 -0) 

 ARSC    │ old  │ new  │ diff       
─────────┼──────┼──────┼────────────
 configs │  290 │  290 │  0         
 entries │ 6920 │ 6922 │ +2 (+2 -0)

APK

     compressed      │     uncompressed     │                        
──────────┬──────────┼───────────┬──────────┤                        
 size     │ diff     │ size      │ diff     │ path                   
──────────┼──────────┼───────────┼──────────┼────────────────────────
    889 B │   +889 B │   1.5 KiB │ +1.5 KiB │ + res/lG.xml           
  2.1 MiB │   +724 B │   2.1 MiB │   +724 B │ ∆ resources.arsc       
  3.5 MiB │   +136 B │   7.8 MiB │   +208 B │ ∆ classes.dex          
  2.3 KiB │    +81 B │  18.5 KiB │   +381 B │ ∆ assets/lpms.json     
 48.4 KiB │    +44 B │ 140.6 KiB │    +82 B │ ∆ META-INF/MANIFEST.MF 
 62.6 KiB │    +31 B │ 140.7 KiB │    +82 B │ ∆ META-INF/CERT.SF     
    997 B │     -2 B │   2.8 KiB │      0 B │ ∆ res/XB.xml           
    950 B │     -1 B │   2.5 KiB │      0 B │ ∆ res/9N.xml           
  1.2 KiB │     -1 B │   1.2 KiB │      0 B │ ∆ META-INF/CERT.RSA    
──────────┼──────────┼───────────┼──────────┼────────────────────────
  5.8 MiB │ +1.9 KiB │  10.2 MiB │ +2.9 KiB │ (total)

DEX

STRINGS:

   old   │ new   │ diff       
  ───────┼───────┼────────────
   38245 │ 38246 │ +1 (+2 -1) 
  + SGD
  + ~~R8{backend:dex,compilation-mode:release,has-checksums:false,min-api:21,pg-map-id:9d045c9,r8-mode:full,version:8.0.46}
  
  - ~~R8{backend:dex,compilation-mode:release,has-checksums:false,min-api:21,pg-map-id:4e2bcf1,r8-mode:full,version:8.0.46}
  

FIELDS:

   old   │ new   │ diff       
  ───────┼───────┼────────────
   35129 │ 35130 │ +1 (+1 -0) 
  + me.a0 t: z

ARSC

ENTRIES:

   old  │ new  │ diff       
  ──────┼──────┼────────────
   6920 │ 6922 │ +2 (+2 -0) 
  + drawable/stripe_ic_paymentsheet_pm_grabpay
  + string/stripe_paymentsheet_payment_method_grabpay

[jaynewstrom-stripe]

This is awesome!

[jaynewstrom-stripe]

CustomerSheet less important than payment sheet?