Display Default Browser on top in ResolverActivity

This fix is a continuation for fixing 116610086
ResolverComparator identifies that it's dealing with a http/https scheme
The original behaviour was to prefer native apps that can handle that
specific URL over browser apps. This behaviour is preserved with the
exception of the Default Browser, as it will be preferred over all other
apps and will be displayed on top, then will be followed by native apps.

In addition, removed unused imports in ResolverComparator (import
ERRORs that prevented the pre-upload repo hook scripts from passing)

Bug: 116610086
Test: manually tested on device (Pixel 2XL) with multiple users
Test: atest ResolverListControllerTest
Change-Id: Ifd5da932c6f9d9cb4bf0a97985d0f9fb7bc2cb69

core/java/com/android/internal/app/ResolverComparator.java

@@ -22,44 +22,36 @@ import android.app.usage.UsageStatsManager;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
-import android.content.IntentFilter;
+import android.content.ServiceConnection;
 import android.content.pm.ApplicationInfo;
-import android.content.pm.ComponentInfo;
 import android.content.pm.PackageManager;
 import android.content.pm.PackageManager.NameNotFoundException;
 import android.content.pm.ResolveInfo;
-import android.content.SharedPreferences;
-import android.content.ServiceConnection;
 import android.metrics.LogMaker;
-import android.os.Environment;
 import android.os.Handler;
 import android.os.IBinder;
 import android.os.Looper;
 import android.os.Message;
 import android.os.RemoteException;
-import android.os.storage.StorageManager;
 import android.os.UserHandle;
-import android.service.resolver.IResolverRankerService;
 import android.service.resolver.IResolverRankerResult;
+import android.service.resolver.IResolverRankerService;
 import android.service.resolver.ResolverRankerService;
 import android.service.resolver.ResolverTarget;
-import android.text.TextUtils;
-import android.util.ArrayMap;
 import android.util.Log;
+
 import com.android.internal.app.ResolverActivity.ResolvedComponentInfo;
 import com.android.internal.logging.MetricsLogger;
 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
 
-import java.io.File;
-import java.lang.InterruptedException;
 import java.text.Collator;
 import java.util.ArrayList;
 import java.util.Comparator;
-import java.util.concurrent.CountDownLatch;
-import java.util.concurrent.TimeUnit;
 import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
 
 /**
  * Ranks and compares packages based on usage stats.
@@ -90,6 +82,8 @@ class ResolverComparator implements Comparator<ResolvedComponentInfo> {
 
     private final Collator mCollator;
     private final boolean mHttp;
+    // can be null if mHttp == false or current user has no default browser package
+    private final String mDefaultBrowserPackageName;
     private final PackageManager mPm;
     private final UsageStatsManager mUsm;
     private final Map<String, UsageStats> mStats;
@@ -184,6 +178,10 @@ class ResolverComparator implements Comparator<ResolvedComponentInfo> {
         getContentAnnotations(intent);
         mAction = intent.getAction();
         mRankerServiceName = new ComponentName(mContext, this.getClass());
+
+        mDefaultBrowserPackageName = mHttp
+                ? mPm.getDefaultBrowserPackageNameAsUser(UserHandle.myUserId())
+                : null;
     }
 
     // get annotations of content from intent.
@@ -312,7 +310,14 @@ class ResolverComparator implements Comparator<ResolvedComponentInfo> {
         if (mHttp) {
             // Special case: we want filters that match URI paths/schemes to be
             // ordered before others.  This is for the case when opening URIs,
-            // to make native apps go above browsers.
+            // to make native apps go above browsers - except for 1 even more special case
+            // which is the default browser, as we want that to go above them all.
+            if (isDefaultBrowser(lhs)) {
+                return -1;
+            }
+            if (isDefaultBrowser(rhs)) {
+                return 1;
+            }
             final boolean lhsSpecific = ResolverActivity.isSpecificUriMatch(lhs.match);
             final boolean rhsSpecific = ResolverActivity.isSpecificUriMatch(rhs.match);
             if (lhsSpecific != rhsSpecific) {
@@ -419,6 +424,20 @@ class ResolverComparator implements Comparator<ResolvedComponentInfo> {
         }
     }
 
+    private boolean isDefaultBrowser(ResolveInfo ri) {
+        // It makes sense to prefer the default browser
+        // only if the targeted user is the current user
+        if (ri.targetUserId != UserHandle.USER_CURRENT) {
+            return false;
+        }
+
+        if (ri.activityInfo.packageName != null
+                && ri.activityInfo.packageName.equals(mDefaultBrowserPackageName)) {
+            return true;
+        }
+        return false;
+    }
+
     // records metrics for evaluation.
     private void logMetrics(int selectedPos) {
         if (mRankerServiceName != null) {