Enable anti-aliasing for hw-accelerated lines

Draw anti-aliased lines with OpenGL by constructing a quad with
a border that fades out (to mimic fragment coverage).

Change-Id: Ib81a3e62d663acdf1b46b401ac4aa7ee9855cc7e
diff --git a/tests/HwAccelerationTest/AndroidManifest.xml b/tests/HwAccelerationTest/AndroidManifest.xml
index 2afc935..c763b1d 100644
--- a/tests/HwAccelerationTest/AndroidManifest.xml
+++ b/tests/HwAccelerationTest/AndroidManifest.xml
@@ -388,6 +388,15 @@
         </activity>
 
         <activity
+                android:name="Lines2Activity"
+                android:label="_Lines2">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+
+        <activity
                 android:name="PathsActivity"
                 android:label="_Paths">
             <intent-filter>