vk: Add permission to use crashReportPrivate.

Change-Id: I1ed54d34f2cc2b81078144facb47941405702d67
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2082653Reviewed-by: Keith Lee <keithlee@chromium.org>
Commit-Queue: Darren Shen <shend@chromium.org>
Cr-Commit-Position: refs/heads/master@{#746608}

chrome/browser/resources/chromeos/input_method/google_xkb_manifest.json

@@ -11,6 +11,7 @@
     "app.window.alwaysOnTop",
     "app.window.ime",
     "audioCapture",
+    "crashReportPrivate",
     "https://clients4.google.com/",
     "https://dl.google.com/",
     "https://handwriting.googleapis.com/",