[CanvasKit] Implement some basic Canvas/Surface things.


drawText is having issues in a release build.  Skottie sometimes
asserts in debug mode. This possibly has something to do with
memory alignment - like https://skia-review.googlesource.com/c/skia/+/155980
helped fix.

Patchset 9 shows off integrating Skia drawing to
an HTML canvas using Ganesh.

To see it locally, set up https://kripken.github.io/emscripten-site/docs/getting_started/downloads.html
and then set $EMSDK to be that directory.  Then run

   make clean
   make local-example

and navigate to http://localhost:8000/skia-wasm/example.html

Patchset 20 shows off Skottie animating directly to a Canvas.

Docs-Preview: https://skia.org/?cl=153882
Bug: skia:
Change-Id: I2ad2f4ffac00925ee901982ccbaeb7aa63b1ea23
Reviewed-on: https://skia-review.googlesource.com/153882
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Kevin Lubick <kjlubick@google.com>
diff --git a/modules/pathkit/npm-wasm/example.html b/modules/pathkit/npm-wasm/example.html
index 09af83b..488f6ec 100644
--- a/modules/pathkit/npm-wasm/example.html
+++ b/modules/pathkit/npm-wasm/example.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<title>PathKit (Skia + WASM)</title>
+<title>PathKit (Skia's Geometry + WASM)</title>
 <meta charset="utf-8" />
 <meta http-equiv="X-UA-Compatible" content="IE=edge">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">