Updating the text classifier model path

The lib2 implementation of libtextclassifier is incompatible with models
for lib1. To avoid trying to load a lib1 model and failing (which happens
when devices are upgraded from O to P), we need a new update model path.
Using this opportunity to remove smartselection from the filename, which
isn't appropriate any more given what the model is used for.

Test: Ran core framework tests
Change-Id: I79a80d10d920019f5091fe9884f370149d39fe88

core/java/android/view/textclassifier/TextClassifierImpl.java

@@ -72,7 +72,7 @@ final class TextClassifierImpl implements TextClassifier {
     private static final String MODEL_DIR = "/etc/textclassifier/";
     private static final String MODEL_FILE_REGEX = "textclassifier\\.smartselection\\.(.*)\\.model";
     private static final String UPDATED_MODEL_FILE_PATH =
-            "/data/misc/textclassifier/textclassifier.smartselection.model";
+            "/data/misc/textclassifier/textclassifier.model";
     private static final List<String> ENTITY_TYPES_ALL =
             Collections.unmodifiableList(Arrays.asList(
                     TextClassifier.TYPE_ADDRESS,

services/core/java/com/android/server/updates/SmartSelectionInstallReceiver.java

@@ -21,8 +21,8 @@ public class SmartSelectionInstallReceiver extends ConfigUpdateInstallReceiver {
     public SmartSelectionInstallReceiver() {
         super(
             "/data/misc/textclassifier/",
-            "textclassifier.smartselection.model",
-            "metadata/smartselection",
+            "textclassifier.model",
+            "metadata/classification",
             "version");
     }