Add Apphooks call for creating TouchlessMenuCoordinator

This adds a new Apphooks method that instantiates
TouchlessMenuCoordinator. Link to the internal CL in the bug.

Bug: 930744
Change-Id: I5f7bf87b50633b793980e6dd945952f8b096910b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1559018Reviewed-by: Ted Choc <tedchoc@chromium.org>
Commit-Queue: Mehran Mahmoudi <mahmoudi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#649252}

chrome/android/java/src/org/chromium/chrome/browser/AppHooks.java

@@ -387,6 +387,11 @@ public abstract class AppHooks {
         return new DigitalWellbeingClient();
     }
 
+    /**
+     * @param activity An activity for access to different features.
+     */
+    public void createTouchlessMenuCoordinator(ChromeActivity activity) {}
+
     /**
      * @param activity An activity for access to different features.
      * @return A new {@link TouchlessUiController} instance.

chrome/android/touchless/java/src/org/chromium/chrome/browser/touchless/NoTouchActivity.java

@@ -136,6 +136,7 @@ public class NoTouchActivity extends SingleTabActivity {
         getFullscreenManager().setTab(getActivityTab());
 
         mUiController = AppHooks.get().createTouchlessUiController(this);
+        AppHooks.get().createTouchlessMenuCoordinator(this);
         super.finishNativeInitialization();
     }