Revert "Unhide RouteInfo#getType and related fields"

Revert "Add APIs that allow to exclude routes from VPN"

Revert "Suppress NewApi warnings for @SystemApi -> public APIs"

Revert "Add VpnServiceBuilderShim for VpnService.Builder"

Revert submission 1551943-vpn-impl

Reason for revert: <DroidMonitor-triggered revert due to breakage https://android-build.googleplex.com/builds/quarterdeck?branch=aosp-master&target=mainline_modules_x86_64-userdebug&lkgb=8007224&lkbb=8008168&fkbb=8007902 >, bug b/210979001
Reverted Changes:
I0e7aa077a:Add VpnServiceBuilderShim for VpnService.Builder
Ib12f5ab39:Suppress NewApi warnings for @SystemApi -> public ...
I59b9185cf:Unhide RouteInfo#getType and related fields
Ie5b62b2b2:Unhide IpPrefix(InetAddress, int)
I993a32d40:Add CTS tests for exclude VPN routes APIs
Ib24b2d3fb:Suppress NewApi warnings for @SystemApi -> public ...
Ic3b10464a:Add APIs that allow to exclude routes from VPN

Change-Id: I98d3b998e4702f56e9d5e17944238b283b29f2b2
BUG: 210979001

framework/api/current.txt

@@ -439,15 +439,11 @@ package android.net {
     method @NonNull public android.net.IpPrefix getDestination();
     method @Nullable public java.net.InetAddress getGateway();
     method @Nullable public String getInterface();
-    method public int getType();
     method public boolean hasGateway();
     method public boolean isDefaultRoute();
     method public boolean matches(java.net.InetAddress);
     method public void writeToParcel(android.os.Parcel, int);
     field @NonNull public static final android.os.Parcelable.Creator<android.net.RouteInfo> CREATOR;
-    field public static final int RTN_THROW = 9; // 0x9
-    field public static final int RTN_UNICAST = 1; // 0x1
-    field public static final int RTN_UNREACHABLE = 7; // 0x7
   }
 
   public abstract class SocketKeepalive implements java.lang.AutoCloseable {

framework/api/system-current.txt

@@ -432,6 +432,10 @@ package android.net {
     ctor public RouteInfo(@Nullable android.net.IpPrefix, @Nullable java.net.InetAddress, @Nullable String, int);
     ctor public RouteInfo(@Nullable android.net.IpPrefix, @Nullable java.net.InetAddress, @Nullable String, int, int);
     method public int getMtu();
+    method public int getType();
+    field public static final int RTN_THROW = 9; // 0x9
+    field public static final int RTN_UNICAST = 1; // 0x1
+    field public static final int RTN_UNREACHABLE = 7; // 0x7
   }
 
   public abstract class SocketKeepalive implements java.lang.AutoCloseable {

framework/src/android/net/RouteInfo.java

@@ -86,26 +86,16 @@ public final class RouteInfo implements Parcelable {
     private final String mInterface;
 
 
-    /**
+    /** Unicast route. @hide */
-     * Unicast route.
+    @SystemApi
-     *
-     * Indicates that destination is reachable directly or via gateway.
-     **/
     public static final int RTN_UNICAST = 1;
 
-    /**
+    /** Unreachable route. @hide */
-     * Unreachable route.
+    @SystemApi
-     *
-     * Indicates that destination is unreachable.
-     **/
     public static final int RTN_UNREACHABLE = 7;
 
-    /**
+    /** Throw route. @hide */
-     * Throw route.
+    @SystemApi
-     *
-     * Indicates that routing information about this destination is not in this table.
-     * Routing lookup should continue in another table.
-     **/
     public static final int RTN_THROW = 9;
 
     /**
@@ -401,7 +391,10 @@ public final class RouteInfo implements Parcelable {
      * Retrieves the type of this route.
      *
      * @return The type of this route; one of the {@code RTN_xxx} constants defined in this class.
+     *
+     * @hide
      */
+    @SystemApi
     @RouteType
     public int getType() {
         return mType;

tests/common/java/android/net/RouteInfoTest.java

@@ -16,8 +16,6 @@
 
 package android.net;
 
-import static android.net.RouteInfo.RTN_THROW;
-import static android.net.RouteInfo.RTN_UNICAST;
 import static android.net.RouteInfo.RTN_UNREACHABLE;
 
 import static com.android.testutils.MiscAsserts.assertEqualBothWays;
@@ -330,16 +328,6 @@ public class RouteInfoTest {
         }
     }
 
-    @Test
-    public void testRouteTypes() {
-        RouteInfo r = new RouteInfo(new IpPrefix(Inet6Address.ANY, 0), RTN_UNREACHABLE);
-        assertEquals(RTN_UNREACHABLE, r.getType());
-        r = new RouteInfo(new IpPrefix(Inet6Address.ANY, 0), RTN_UNICAST);
-        assertEquals(RTN_UNICAST, r.getType());
-        r = new RouteInfo(new IpPrefix(Inet6Address.ANY, 0), RTN_THROW);
-        assertEquals(RTN_THROW, r.getType());
-    }
-
     @Test
     public void testTruncation() {
       LinkAddress l;