Add test for gamma correction.

Change-Id: Id2a311bc116438d3627a943cb5fb1ba8dc121bb0
diff --git a/tests/HwAccelerationTest/AndroidManifest.xml b/tests/HwAccelerationTest/AndroidManifest.xml
index 564f13e..34cbc44 100644
--- a/tests/HwAccelerationTest/AndroidManifest.xml
+++ b/tests/HwAccelerationTest/AndroidManifest.xml
@@ -31,6 +31,26 @@
         </activity>
         
         <activity
+                android:name="TextGammaActivity"
+                android:label="_Gamma"
+                android:theme="@android:style/Theme.Translucent.NoTitleBar">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+
+            <activity
+                android:name="TextGammaActivity$SubGammaActivity"
+                android:label="_Sub Gamma"
+                android:theme="@android:style/Theme.Translucent.NoTitleBar"
+                android:hardwareAccelerated="false">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+            </intent-filter>
+        </activity>
+        
+        <activity
                 android:name="LayersActivity"
                 android:label="_Layers"
                 android:theme="@android:style/Theme.Translucent.NoTitleBar">