chromeos: converts accessibility to inject events directly

Instead of going through mojom, which is going to be removed shortly. The
a11y code is unique in that it doesn't want to go through rewriters, which
requires a special api.

BUG=960503
TEST=covered by tests

Change-Id: I336d491c89f694e82fa1a8b3a8fcdbc1807ae835
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1601831
Reviewed-by: Michael Wasserman <[email protected]>
Commit-Queue: Scott Violet <[email protected]>
Cr-Commit-Position: refs/heads/master@{#658162}
diff --git a/chrome/browser/extensions/BUILD.gn b/chrome/browser/extensions/BUILD.gn
index 101825e..322f00f 100644
--- a/chrome/browser/extensions/BUILD.gn
+++ b/chrome/browser/extensions/BUILD.gn
@@ -977,6 +977,7 @@
       configs += [ "//build/config/linux/dbus" ]
     }
     deps += [
+      "//ash",
       "//ash/public/cpp",
       "//chrome/browser/resources/chromeos/camera:chrome_camera_app",
       "//chromeos",