Create one TrackDataHub per TrackDetailActivity.

MyTracks/src/com/google/android/apps/mytracks/MyTracksApplication.java

@@ -15,7 +15,6 @@
  */
 package com.google.android.apps.mytracks;
 
-import com.google.android.apps.mytracks.content.TrackDataHub;
 import com.google.android.apps.mytracks.services.RemoveTempFilesService;
 import com.google.android.apps.mytracks.util.AnalyticsUtils;
 import com.google.android.apps.mytracks.util.ApiAdapterFactory;
@@ -31,8 +30,6 @@ import android.content.Intent;
  */
 public class MyTracksApplication extends Application {
 
-  private TrackDataHub trackDataHub;
-
   @Override
   public void onCreate() {
     super.onCreate();
@@ -43,21 +40,4 @@ public class MyTracksApplication extends Application {
     Intent intent = new Intent(this, RemoveTempFilesService.class);
     startService(intent);
   }
-
-  /**
-   * Gets the application's TrackDataHub. Note: use synchronized to make sure
-   * only one instance is created per application.
-   */
-  public synchronized TrackDataHub getTrackDataHub() {
-    if (trackDataHub == null) {
-      /*
-       * TODO: One TrackDataHub per TrackDetailActivity. Match start/stop
-       * TrackDataHub with TrackDetailActivity lifecycle. Call
-       * TrackDataHub.loadTrack when TrackDetailActivity resumes.
-       */
-      trackDataHub = TrackDataHub.newInstance(getApplicationContext());
-      trackDataHub.start();
-    }
-    return trackDataHub;
-  }
 }