Rename WaitFlags (etc.) to HandleSignals in Java bindings

mojo/public/java/src/org/chromium/mojo/system/InvalidHandle.java

Index: mojo/public/java/src/org/chromium/mojo/system/InvalidHandle.java
diff --git a/mojo/public/java/src/org/chromium/mojo/system/InvalidHandle.java b/mojo/public/java/src/org/chromium/mojo/system/InvalidHandle.java
index e80132dd379ed1ea391eba27f4cfa886e3ebb404..19d31ae8cb77b4ca48e3ada63f21f837acb5fe4c 100644
--- a/mojo/public/java/src/org/chromium/mojo/system/InvalidHandle.java
+++ b/mojo/public/java/src/org/chromium/mojo/system/InvalidHandle.java
@@ -4,7 +4,7 @@
 
 package org.chromium.mojo.system;
 
-import org.chromium.mojo.system.Core.WaitFlags;
+import org.chromium.mojo.system.Core.HandleSignals;
 import org.chromium.mojo.system.DataPipe.ConsumerHandle;
 import org.chromium.mojo.system.DataPipe.ProducerHandle;
 
@@ -37,10 +37,10 @@ public class InvalidHandle implements UntypedHandle, MessagePipeHandle, Consumer
     }
 
     /**
-     * @see Handle#wait(Core.WaitFlags, long)
+     * @see Handle#wait(Core.HandleSignals, long)
      */
     @Override
-    public int wait(WaitFlags flags, long deadline) {
+    public int wait(HandleSignals signals, long deadline) {
         throw new MojoException(MojoResult.INVALID_ARGUMENT);
     }