Add debug logging

Change-Id: Ibcd6a14ffb966234f0c31e0455de2793a859a7f0
diff --git a/src/com/android/mail/providers/AccountCacheProvider.java b/src/com/android/mail/providers/AccountCacheProvider.java
index ead1282..583b79b 100644
--- a/src/com/android/mail/providers/AccountCacheProvider.java
+++ b/src/com/android/mail/providers/AccountCacheProvider.java
@@ -341,6 +341,7 @@
             return;
         }
 
+        LogUtils.d(LOG_TAG, "Cursor with %d accounts returned", data.getCount());
         final CursorLoader cursorLoader = (CursorLoader)loader;
         final Uri accountsQueryUri = cursorLoader.getUri();
         // TODO(pwestbro):
diff --git a/src/com/android/mail/ui/AbstractActivityController.java b/src/com/android/mail/ui/AbstractActivityController.java
index f166754..37b7f5c 100644
--- a/src/com/android/mail/ui/AbstractActivityController.java
+++ b/src/com/android/mail/ui/AbstractActivityController.java
@@ -726,6 +726,9 @@
         // We want to reinitialize only if we haven't ever been initialized, or
         // if the current account has vanished.
         final int id = loader.getId();
+        if (data == null) {
+            LogUtils.e(LOG_TAG, "Received null cursor from loader id: %d", id);
+        }
         if (id == ACCOUNT_CURSOR_LOADER) {
 
             final boolean accountListUpdated = accountsUpdated(data);