Fixing build error caused by missing implementation in test class.

Bug: 13962594
Change-Id: I92b3da51069f4299ef056fdfa6abdcf63c5549c1
diff --git a/tests/src/com/android/dialer/calllog/CallLogGroupBuilderTest.java b/tests/src/com/android/dialer/calllog/CallLogGroupBuilderTest.java
index cef717f..891f068 100644
--- a/tests/src/com/android/dialer/calllog/CallLogGroupBuilderTest.java
+++ b/tests/src/com/android/dialer/calllog/CallLogGroupBuilderTest.java
@@ -297,5 +297,15 @@
         public void addGroup(int cursorPosition, int size, boolean expanded) {
             groups.add(new GroupSpec(cursorPosition, size, expanded));
         }
+
+        @Override
+        public void setDayGroup(long rowId, int dayGroup) {
+            //No-op
+        }
+
+        @Override
+        public void clearDayGroups() {
+            //No-op
+        }
     }
 }