Add test for layer updates optimizations

Optimizations are following.

Change-Id: I120e1d0c08d8068fcac46515f37a4ae510e5f3a3
diff --git a/tests/HwAccelerationTest/AndroidManifest.xml b/tests/HwAccelerationTest/AndroidManifest.xml
index 4e229ec..4cb409d 100644
--- a/tests/HwAccelerationTest/AndroidManifest.xml
+++ b/tests/HwAccelerationTest/AndroidManifest.xml
@@ -42,6 +42,15 @@
         </activity>
 
         <activity
+                android:name="MultiLayersActivity"
+                android:label="_MultiLayers">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+
+        <activity
                 android:name="TJunctionActivity"
                 android:label="_T-Junction">
             <intent-filter>