Adds blink::mojom::Hyphenation to browser's renderer capability

This is required for hyphenation on Android.

BUG=652453
TBR=ben@chromium.org

Review-Url: https://codereview.chromium.org/2390093002
Cr-Commit-Position: refs/heads/master@{#422673}

content/public/app/mojo/content_browser_manifest.json

@@ -12,6 +12,7 @@
         "blink::mojom::BackgroundSyncService",
         "blink::mojom::BroadcastChannelProvider",
         "blink::mojom::BudgetService",
+        "blink::mojom::Hyphenation",
         "blink::mojom::MimeRegistry",
         "blink::mojom::NotificationService",
         "blink::mojom::OffscreenCanvasCompositorFrameSinkProvider",