Add instructions for building Chrobalt

README.md

@@ -1,21 +1,26 @@
-# ![Logo](chrome/app/theme/chromium/product_logo_64.png) Chromium
+# ![Logo](chrome/app/theme/chromium/product_logo_64.png) Chrobalt Sandbox
 
-Chromium is an open-source browser project that aims to build a safer, faster,
-and more stable way for all users to experience the web.
-
-The project's web site is https://www.chromium.org.
+This is Cobalt's repo for testing changes as we move to Chrobalt.
 
 To check out the source code locally, don't use `git clone`! Instead,
 follow [the instructions on how to get the code](docs/get_the_code.md).
+Then add chrobalt_sandbox as a remote and fetch it:
 
-Documentation in the source is rooted in [docs/README.md](docs/README.md).
+```shell
+cd src
+git remote add chrobalt_sandbox git@github.com:youtube/chrobalt_sandbox.git
+git fetch chrobalt_sandbox
+git checkout -b dev/m114 chrobalt_sandbox/dev/m114
+gclient sync -r $(git rev-parse HEAD)
+```
 
-Learn how to [Get Around the Chromium Source Code Directory Structure
-](https://www.chromium.org/developers/how-tos/getting-around-the-chrome-source-code).
+Then to build linux:
 
-For historical reasons, there are some small top level directories. Now the
-guidance is that new top level directories are for product (e.g. Chrome,
-Android WebView, Ash). Even if these products have multiple executables, the
-code should be in subdirectories of the product.
+```shell
+gn gen out/Default
+cp chrobalt/linux/args.gn out/Default/
+gn gen out/Default
+ninja -C out/Default base_unittests
+```
 
-If you found a bug, please file it at https://crbug.com/new.
+Replacing `base_unittests` with whatever target you want to build.