Make abiOverride attribute public

Bug: 26874366
Change-Id: Ie3ecea6d84e2cb1522e736a21c3a3a24ac62eb27
diff --git a/api/current.txt b/api/current.txt
index 61ae1e0..c44220c 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -198,6 +198,7 @@
 
   public static final class R.attr {
     ctor public R.attr();
+    field public static final int abiOverride = 16844054; // 0x1010516
     field public static final int absListViewStyle = 16842858; // 0x101006a
     field public static final int accessibilityEventTypes = 16843648; // 0x1010380
     field public static final int accessibilityFeedbackType = 16843650; // 0x1010382
diff --git a/api/test-current.txt b/api/test-current.txt
index ad45752..4e57606 100644
--- a/api/test-current.txt
+++ b/api/test-current.txt
@@ -198,6 +198,7 @@
 
   public static final class R.attr {
     ctor public R.attr();
+    field public static final int abiOverride = 16844054; // 0x1010516
     field public static final int absListViewStyle = 16842858; // 0x101006a
     field public static final int accessibilityEventTypes = 16843648; // 0x1010380
     field public static final int accessibilityFeedbackType = 16843650; // 0x1010382
diff --git a/core/res/res/values/attrs_manifest.xml b/core/res/res/values/attrs_manifest.xml
index 15a4ad8..3a5336c 100644
--- a/core/res/res/values/attrs_manifest.xml
+++ b/core/res/res/values/attrs_manifest.xml
@@ -429,10 +429,7 @@
          sets. -->
     <attr name="multiArch" format ="boolean" />
 
-    <!-- Specify abiOverride for multiArch application.
-         @hide
-         @SystemApi
-     -->
+    <!-- Specify abiOverride for multiArch application. -->
     <attr name="abiOverride" />
 
     <!-- Specify whether a component is allowed to have multiple instances