Update Search bar background color in Homepage

Change-Id: I53a42d576df2e7d19244af2ebcfee3e8d6376dfd
Fixes: 340759836
Test: visual

src/com/android/settings/homepage/SettingsHomepageActivity.java

@@ -455,7 +455,7 @@ public class SettingsHomepageActivity extends FragmentActivity implements
     }
 
     private void updateHomepageBackground() {
-        if (!mIsEmbeddingActivityEnabled) {
+        if (!Flags.homepageRevamp() && !mIsEmbeddingActivityEnabled) {
             return;
         }