Mojo EDK: Introduce MojoQueryHandleSignalsState API

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

Index: mojo/public/java/system/src/org/chromium/mojo/system/Handle.java
diff --git a/mojo/public/java/system/src/org/chromium/mojo/system/Handle.java b/mojo/public/java/system/src/org/chromium/mojo/system/Handle.java
index 6181669dff6a74ba565624e20c2a9ba5e524dbc1..903f36d6776fd86ed33076faea7a168e8cd9c5b8 100644
--- a/mojo/public/java/system/src/org/chromium/mojo/system/Handle.java
+++ b/mojo/public/java/system/src/org/chromium/mojo/system/Handle.java
@@ -4,7 +4,7 @@
 
 package org.chromium.mojo.system;
 
-import org.chromium.mojo.system.Core.WaitResult;
+import org.chromium.mojo.system.Core.HandleSignalsState;
 
 import java.io.Closeable;
 
@@ -25,9 +25,9 @@ public interface Handle extends Closeable {
     public void close();
 
     /**
-     * @see Core#wait(Handle, Core.HandleSignals, long)
+     * @return the last known signaling state of the handle.
      */
-    public WaitResult wait(Core.HandleSignals signals, long deadline);
+    public HandleSignalsState querySignalsState();
 
     /**
      * @return whether the handle is valid. A handle is valid until it has been explicitly closed or