Improve responsiveness by always consuming batched events.

Change-Id: I2eb88f8fde97ce0cd820f39da4ebe8698a7db95c

Author: Jeff Brown

core/java/android/view/ViewRootImpl.java

@@ -4056,9 +4056,13 @@ void doConsumeBatchedInput(boolean callback) {
                 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT,
                         mConsumedBatchedInputRunnable, null);
             }
-            if (mInputEventReceiver != null) {
-                mInputEventReceiver.consumeBatchedInputEvents();
-            }
+        }
+
+        // Always consume batched input events even if not scheduled, because there
+        // might be new input there waiting for us that we have no noticed yet because
+        // the Looper has not had a chance to run again.
+        if (mInputEventReceiver != null) {
+            mInputEventReceiver.consumeBatchedInputEvents();
         }
     }