[canvaskit] roll to v0.8.0

Biggest change here is to add initial support for WebGL 2.0 where possible.

Change-Id: I05657dbfeed25fc665205ceda6b35022f6a42053
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/249815
Reviewed-by: Kevin Lubick <kjlubick@google.com>

modules/canvaskit/CHANGELOG.md

@@ -6,6 +6,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.8.0] - 2019-10-21
+
 ### Added
  - `CanvasKit.MakeAnimatedImageFromEncoded`, `SkCanvas.drawAnimatedImage`.
  - `CanvasKit.SkFontMgr.FromData` which takes several ArrayBuffers of font data, parses

modules/canvaskit/canvaskit/package.json

@@ -1,6 +1,6 @@
 {
   "name": "canvaskit-wasm",
-  "version": "0.7.0",
+  "version": "0.8.0",
   "description": "A WASM version of Skia's Canvas API",
   "main": "bin/canvaskit.js",
   "homepage": "https://github.com/google/skia/tree/master/modules/canvaskit",