Revert of Mojo EDK: Introduce MojoQueryHandleSignalsState API

mojo/android/javatests/src/org/chromium/mojo/HandleMock.java

Index: mojo/android/javatests/src/org/chromium/mojo/HandleMock.java
diff --git a/mojo/android/javatests/src/org/chromium/mojo/HandleMock.java b/mojo/android/javatests/src/org/chromium/mojo/HandleMock.java
index 1f8de94500a39bca726bf1eed877b5df86eabf36..6783c0903d728261056ff2e0321c2e2621cc2385 100644
--- a/mojo/android/javatests/src/org/chromium/mojo/HandleMock.java
+++ b/mojo/android/javatests/src/org/chromium/mojo/HandleMock.java
@@ -5,7 +5,7 @@
 package org.chromium.mojo;
 
 import org.chromium.mojo.system.Core;
-import org.chromium.mojo.system.Core.HandleSignalsState;
+import org.chromium.mojo.system.Core.WaitResult;
 import org.chromium.mojo.system.DataPipe;
 import org.chromium.mojo.system.DataPipe.ConsumerHandle;
 import org.chromium.mojo.system.DataPipe.ProducerHandle;
@@ -35,11 +35,14 @@
     }
 
     /**
-     * @see Handle#querySignalsState()
-     */
-    @Override
-    public HandleSignalsState querySignalsState() {
-        return null;
+     * @see Handle#wait(Core.HandleSignals, long)
+     */
+    @Override
+    public WaitResult wait(Core.HandleSignals signals, long deadline) {
+        // Do nothing.
+        WaitResult result = new WaitResult();
+        result.setMojoResult(MojoResult.OK);
+        return result;
     }
 
     /**