Mark only browser as default in app detail page

Change-Id: I8112d859ba788a1dc67c44b5e0de668c0fc13169
Fix: 35307728
Test: make RunSettingsRoboTests

tests/robotests/src/com/android/settings/applications/defaultapps/DefaultBrowserPreferenceControllerTest.java

@@ -19,6 +19,7 @@ package com.android.settings.applications.defaultapps;
 
 import android.content.Context;
 import android.content.Intent;
+import android.content.pm.ResolveInfo;
 import android.os.UserManager;
 import android.support.v7.preference.Preference;
 
@@ -35,6 +36,8 @@ import org.mockito.MockitoAnnotations;
 import org.robolectric.annotation.Config;
 import org.robolectric.util.ReflectionHelpers;
 
+import java.util.Arrays;
+
 import static com.google.common.truth.Truth.assertThat;
 import static org.mockito.Matchers.any;
 import static org.mockito.Matchers.anyInt;
@@ -85,4 +88,15 @@ public class DefaultBrowserPreferenceControllerTest {
 
         verify(mPackageManager).getDefaultBrowserPackageNameAsUser(anyInt());
     }
+
+    @Test
+    public void isBrowserDefault_onlyApp_shouldReturnTrue() {
+        final String testPkg = "pkg";
+        when(mPackageManager.getDefaultBrowserPackageNameAsUser(anyInt()))
+                .thenReturn(null);
+        when(mPackageManager.queryIntentActivitiesAsUser(any(Intent.class), anyInt(), anyInt()))
+                .thenReturn(Arrays.asList(new ResolveInfo()));
+
+        assertThat(mController.isBrowserDefault(testPkg, 0)).isTrue();
+    }
 }