Add some comments about resuming auto-suggestion

Bug: 5846646
Change-Id: Ib2c76ec173972eb7acadbfaae7e930849d546721
diff --git a/java/src/com/android/inputmethod/latin/LatinIME.java b/java/src/com/android/inputmethod/latin/LatinIME.java
index e60f550..2f5f2a5 100644
--- a/java/src/com/android/inputmethod/latin/LatinIME.java
+++ b/java/src/com/android/inputmethod/latin/LatinIME.java
@@ -1372,6 +1372,10 @@
                 ic.deleteSurroundingText(1, 0);
             }
         } else {
+            // We should be very careful about auto-correction cancellation and suggestion
+            // resuming here. The behavior needs to be different according to text field types,
+            // and it would be much clearer to test for them explicitly here rather than
+            // relying on implicit values like "whether the suggestion strip is displayed".
             if (mWordComposer.didAutoCorrectToAnotherWord()) {
                 Utils.Stats.onAutoCorrectionCancellation();
                 cancelAutoCorrect(ic);
@@ -1391,6 +1395,7 @@
                 }
             }
 
+            // See the comment above: must be careful about resuming auto-suggestion.
             if (mSuggestionsView != null && mSuggestionsView.dismissAddToDictionaryHint()) {
                 // Go back to the suggestion mode if the user canceled the
                 // "Touch again to save".