Show app installer info even if it doesn't handle ACTION.APP_SHOW_INFO.

- Also fix an issue where we are showing the app name instead of it's
  installer name.

Bug: 28301883
Change-Id: I392f7d01f5ec4d1ba5b5030e33ebe8260ff5aa31

src/com/android/settings/Utils.java

@@ -1124,5 +1124,18 @@ public final class Utils extends com.android.settingslib.Utils {
         }
         return false;
     }
+
+    public static CharSequence getApplicationLabel(Context context, String packageName) {
+        try {
+            final ApplicationInfo appInfo = context.getPackageManager().getApplicationInfo(
+                    packageName,
+                    PackageManager.MATCH_DISABLED_COMPONENTS
+                    | PackageManager.MATCH_UNINSTALLED_PACKAGES);
+            return appInfo.loadLabel(context.getPackageManager());
+        } catch (PackageManager.NameNotFoundException e) {
+            Log.w(TAG, "Unable to find info for package: " + packageName);
+        }
+        return null;
+    }
 }