Fix Settings manifest pointing to old class namespace

The string declaring the right fragment was never updated to the new
namespace.

Change-Id: I35809f2f35dbf290deeb69d1bc672b86f8d5a752
Fixes: 63677809
Test: make SettingsUnitTests && \
adb install -r out/target/product/<device>/data/app/SettingsUnitTests/SettingsUnitTests.apk && \
adb shell am instrument -w -e class \
com.android.settings.dream.DreamSettingsLaunchTest\
com.android.settings.tests.unit/android.support.test.runner.AndroidJUnitRunner

tests/unit/src/com/android/settings/dream/DreamSettingsLaunchTest.java

@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.dream;
+
+import android.content.Context;
+import android.content.Intent;
+import android.provider.Settings;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.filters.SmallTest;
+import android.support.test.runner.AndroidJUnit4;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+@RunWith(AndroidJUnit4.class)
+@SmallTest
+public class DreamSettingsLaunchTest {
+
+    @Test
+    public void launchFromIntent_doesNotCrash() {
+        final Context context = InstrumentationRegistry.getTargetContext();
+        Intent intent = new Intent(Settings.ACTION_DREAM_SETTINGS);
+
+        context.startActivity(intent);
+    }
+}