Create a feature flag for Search v2.

Also moved all other flags in a common file so we can track them more
easily.

Bug: 68825426
Bug: 64938328
Test: rerun robotests
Change-Id: I3fc805054cb960bedd965b1b907be759df50b95d

tests/robotests/src/com/android/settings/SettingsActivityTest.java

@@ -17,7 +17,6 @@
 package com.android.settings;
 
 import static com.google.common.truth.Truth.assertThat;
-
 import static org.mockito.ArgumentMatchers.nullable;
 import static org.mockito.Matchers.anyInt;
 import static org.mockito.Mockito.doReturn;
@@ -29,13 +28,11 @@ import static org.mockito.Mockito.when;
 import android.app.ActivityManager;
 import android.app.FragmentManager;
 import android.app.FragmentTransaction;
-import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
 import android.graphics.Bitmap;
 import android.os.Bundle;
 
-import com.android.settings.search.SearchActivity;
 import com.android.settings.testutils.SettingsRobolectricTestRunner;
 
 import org.junit.Before;
@@ -46,7 +43,6 @@ import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
 import org.robolectric.RuntimeEnvironment;
 import org.robolectric.annotation.Config;
-import org.robolectric.shadows.ShadowApplication;
 
 @RunWith(SettingsRobolectricTestRunner.class)
 @Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
@@ -97,15 +93,4 @@ public class SettingsActivityTest {
 
         assertThat((boolean) bundle.get(SettingsActivity.SAVE_KEY_SHOW_HOME_AS_UP)).isTrue();
     }
-
-    @Test
-    public void testOnClick() {
-        doReturn("com.android.settings").when(mActivity).getPackageName();
-
-        mActivity.onClick(null);
-
-        Intent intent = ShadowApplication.getInstance().getNextStartedActivity();
-        assertThat(intent.getComponent()).isEqualTo(
-                new ComponentName("com.android.settings", SearchActivity.class.getName()));
-    }
 }