Fixing build breakage.

Change-Id: Idf8759c7bc88af534103731eef535fc310bed7e5
diff --git a/tools/layoutlib/bridge/src/android/view/IWindowManagerImpl.java b/tools/layoutlib/bridge/src/android/view/IWindowManagerImpl.java
index 007d075..498be5a 100644
--- a/tools/layoutlib/bridge/src/android/view/IWindowManagerImpl.java
+++ b/tools/layoutlib/bridge/src/android/view/IWindowManagerImpl.java
@@ -513,4 +513,8 @@
         // TODO Auto-generated method stub
         return null;
     }
+
+    @Override
+    public void cancelTaskWindowTransition(int taskId) {
+    }
 }