Use AAPT2 with CtsContentTestCases

Test: This is the test!
Change-Id: I7e188ae331f58ae382624c648511b37726dfcd46
diff --git a/tests/tests/content/Android.mk b/tests/tests/content/Android.mk
index 684e665..caaa669 100644
--- a/tests/tests/content/Android.mk
+++ b/tests/tests/content/Android.mk
@@ -20,6 +20,7 @@
 LOCAL_MODULE_TAGS := optional
 # and when built explicitly put it in the data partition
 LOCAL_MODULE_PATH := $(TARGET_OUT_DATA_APPS)
+LOCAL_USE_AAPT2 := true
 
 LOCAL_JAVA_LIBRARIES := android.test.runner
 
diff --git a/tests/tests/content/res/values/styles.xml b/tests/tests/content/res/values/styles.xml
index c6e4b1d..d1c30d7 100644
--- a/tests/tests/content/res/values/styles.xml
+++ b/tests/tests/content/res/values/styles.xml
@@ -128,8 +128,8 @@
 
     <style name="TestProgressBar">
         <item name="android:indeterminateOnly">false</item>
-        <item name="android:progressDrawable">?android:drawable/progress_horizontal</item>
-        <item name="android:indeterminateDrawable">?android:drawable/progress_horizontal</item>
+        <item name="android:progressDrawable">@android:drawable/progress_horizontal</item>
+        <item name="android:indeterminateDrawable">@android:drawable/progress_horizontal</item>
         <item name="android:minHeight">20dip</item>
         <item name="android:maxHeight">20dip</item>
         <item name="android:focusable">true</item>