am d838ca6b: Merge "Add to string implementation for the new accessibility actions."

# Via Android (Google) Code Review (1) and Svetoslav Ganov (1)
* commit 'd838ca6bc2c886375773c52f7851898f810cdc4b':
  Add to string implementation for the new accessibility actions.
diff --git a/core/java/android/view/accessibility/AccessibilityNodeInfo.java b/core/java/android/view/accessibility/AccessibilityNodeInfo.java
index 7a3d7c3..4e7ff08 100644
--- a/core/java/android/view/accessibility/AccessibilityNodeInfo.java
+++ b/core/java/android/view/accessibility/AccessibilityNodeInfo.java
@@ -1914,8 +1914,16 @@
                 return "ACTION_SCROLL_FORWARD";
             case ACTION_SCROLL_BACKWARD:
                 return "ACTION_SCROLL_BACKWARD";
+            case ACTION_CUT:
+                return "ACTION_CUT";
+            case ACTION_COPY:
+                return "ACTION_COPY";
+            case ACTION_PASTE:
+                return "ACTION_PASTE";
+            case ACTION_SET_SELECTION:
+                return "ACTION_SET_SELECTION";
             default:
-                throw new IllegalArgumentException("Unknown action: " + action);
+                return"ACTION_UNKNOWN";
         }
     }