Add home activity methods to wrapper.

This allows us to properly use it in Robolectric tests.

Bug: 63154615
Test: Used in Settings unit test

Change-Id: I9f55529449313003a5ed10a997e21591ceae43cb

packages/SettingsLib/src/com/android/settingslib/applications/PackageManagerWrapper.java

@@ -123,4 +123,9 @@ public interface PackageManagerWrapper {
      * @return the label as a CharSequence
      */
     CharSequence loadLabel(ApplicationInfo app);
+
+    /**
+     * Retrieve all activities that can be performed for the given intent.
+     */
+    List<ResolveInfo> queryIntentActivities(Intent intent, int flags);
 }

packages/SettingsLib/src/com/android/settingslib/applications/PackageManagerWrapperImpl.java

@@ -113,4 +113,9 @@ public class PackageManagerWrapperImpl implements PackageManagerWrapper {
     public CharSequence loadLabel(ApplicationInfo app) {
         return app.loadLabel(mPm);
     }
+
+    @Override
+    public List<ResolveInfo> queryIntentActivities(Intent intent, int flags) {
+        return mPm.queryIntentActivities(intent, flags);
+    }
 }