Roll R8 and D8 1.4.14 -> 1.5.20

Bug: 952640, 954179
Change-Id: I7af49dbf8b75eb97ad14c6d9b1f849ac52cf9f05
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1574278Reviewed-by: Eric Stevenson <estevenson@chromium.org>
Commit-Queue: Sam Maier <smaier@chromium.org>
Cr-Commit-Position: refs/heads/master@{#652267}

DEPS

@@ -1256,7 +1256,7 @@ deps = {
       'packages': [
           {
               'package': 'chromium/third_party/r8',
-              'version': 'SlcbUnEufAQ-iuOwGOl8yYQuctmpf7bMqh59kBfpil0C',
+              'version': '-hqyjKgjGWSfNsdcPJAnYNVOb96JOv0pJM82vtRo9M8C',
           },
       ],
       'condition': 'checkout_android',

third_party/r8/README.chromium

 Name: R8
 URL: https://r8.googlesource.com/r8
-Revision: 03ab76ff37d7995f76b639dec680cd49ff6fbc41
-Version: 1.4.14-dev
+Revision: 887271c359ed811656e4b116fb58d64fa9728e0a
+Version: 1.5.20-dev
 License: BSD 3-Clause
 License File: NOT_SHIPPED
 Security Critical: no