am f11c4a9a: Merge "[Rlog50] capture bigrams properly even with deletions"

* commit 'f11c4a9aeb9b08d6c0c29861c3d9832334834d90':
  [Rlog50] capture bigrams properly even with deletions

1 files changed, 14 insertions, 0 deletions

diff --git a/java/src/com/android/inputmethod/research/LogBuffer.java b/java/src/com/android/inputmethod/research/LogBuffer.java
index 14e8d08a2..9d095f8ad 100644
--- a/java/src/com/android/inputmethod/research/LogBuffer.java
+++ b/java/src/com/android/inputmethod/research/LogBuffer.java
@@ -46,6 +46,20 @@ public class LogBuffer {
         mLogUnits.add(logUnit);
     }
 
+    public LogUnit unshiftIn() {
+        if (mLogUnits.isEmpty()) {
+            return null;
+        }
+        return mLogUnits.removeLast();
+    }
+
+    public LogUnit peekLastLogUnit() {
+        if (mLogUnits.isEmpty()) {
+            return null;
+        }
+        return mLogUnits.peekLast();
+    }
+
     public boolean isEmpty() {
         return mLogUnits.isEmpty();
     }