Merge changes from topic "am-a7804bdb-f032-4f42-8fb7-e5060608e4df" into ub-launcher3-master

* changes:
  [automerger] Making Clear-all a "button" for accessibility. am: 1e3687d5a1
  Making Clear-all a "button" for accessibility.
diff --git a/quickstep/src/com/android/quickstep/views/ClearAllButton.java b/quickstep/src/com/android/quickstep/views/ClearAllButton.java
index 14867ab..f3a0e4f 100644
--- a/quickstep/src/com/android/quickstep/views/ClearAllButton.java
+++ b/quickstep/src/com/android/quickstep/views/ClearAllButton.java
@@ -23,9 +23,9 @@
 import android.support.annotation.Nullable;
 import android.util.AttributeSet;
 import android.view.accessibility.AccessibilityNodeInfo;
-import android.widget.TextView;
+import android.widget.Button;
 
-public class ClearAllButton extends TextView {
+public class ClearAllButton extends Button {
     RecentsView mRecentsView;
 
     public ClearAllButton(Context context, @Nullable AttributeSet attrs) {