[Contextual Search] Fix Promo behavior.

chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchManagementDelegate.java

Index: chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchManagementDelegate.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchManagementDelegate.java b/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchManagementDelegate.java
index f5f4f597807a643c0379e2b48e340b93f4fad938..f194d14b5d2b83c1419737ed3bd28c308d3c97b1 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchManagementDelegate.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchManagementDelegate.java
@@ -14,6 +14,18 @@ import org.chromium.content_public.common.TopControlsState;
  */
 public interface ContextualSearchManagementDelegate {
     /**
+     * Sets the preference state to enabled or disabled.
+     *
+     * @param enabled Whether the preference should be set to enabled.
+     */
+    public void setPreferenceState(boolean enabled);
+
+    /**
+     * @return Whether the Opt-out promo is available to be be shown in the panel.
+     */
+    boolean isOptOutPromoAvailable();
+
+    /**
      * @return Whether or not the Contextual Search Bar is peeking.
      */
     boolean isSearchBarPeeking();