Avoid clearing default browser setting when unnecessary

If the priority parameter of a browser app's intent-filter in Manifest
is less than 0, it can not be selected by user. So it shoult not clear
default browser settings.

Bug: Install more than one browser apps, and pick one as default,
then install com.taobao.taobao. Default settings will be cleared.
Test: N/A

Change-Id: Ib24d80a025ae848cb90ada436cf65bf8cbed785f
Signed-off-by: tiansiming <tiansiming@xiaomi.com>
diff --git a/services/core/java/com/android/server/pm/PackageManagerService.java b/services/core/java/com/android/server/pm/PackageManagerService.java
index 242a76d..c9be02e 100644
--- a/services/core/java/com/android/server/pm/PackageManagerService.java
+++ b/services/core/java/com/android/server/pm/PackageManagerService.java
@@ -3463,7 +3463,7 @@
         final int N = list.size();
         for (int i = 0; i < N; i++) {
             ResolveInfo info = list.get(i);
-            if (packageName.equals(info.activityInfo.packageName)) {
+            if (info.priority >= 0 && packageName.equals(info.activityInfo.packageName)) {
                 return true;
             }
         }