Adds speech-rule-engine to third party deps

Previously, this dependency lived in Chrome only as a packed js file.

Pull this project into third party completely to allow for accessibility extensions to consume its unicode character description.

To date there are five languages localized.

Signed off by Chrome eng review.

[email protected]

Bug: none
Change-Id: I597722f882900df59d40d5ad70fe9fb4f9d23b8d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2688175
Commit-Queue: David Tseng <[email protected]>
Reviewed-by: Dominic Mazzoni <[email protected]>
Cr-Commit-Position: refs/heads/master@{#852842}
diff --git a/DEPS b/DEPS
index aa28cdb..b7e1433 100644
--- a/DEPS
+++ b/DEPS
@@ -882,6 +882,12 @@
       'dep_type': 'cipd',
   },
 
+  # Dependency for ChromeVox.
+  'src/third_party/chromevox/third_party/sre/src': {
+      'url': Var('chromium_git') + '/external/github.com/zorkow/speech-rule-engine.git' + '@' + '5a56d4d33d67dc7c692da032d2ebbdefd7de780e',
+      'condition': 'checkout_chromeos',
+  },
+
   # Tools used when building Chrome for Chrome OS. This affects both the Simple
   # Chrome workflow, as well as the chromeos-chrome ebuild.
   'src/third_party/chromite': {