[Contextual Search] Use Mojo API for Quick Answers.

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

Index: chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchFieldTrial.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchFieldTrial.java b/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchFieldTrial.java
index dd7c76d8777966b12c298d7533036ab870d64b8a..a5eeb5ae59872d0e59a8a6ece32aa5869aeb3389 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchFieldTrial.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchFieldTrial.java
@@ -42,6 +42,9 @@ public class ContextualSearchFieldTrial {
             "disable_accept_languages_for_translation";
     static final String ENABLE_ENGLISH_TARGET_TRANSLATION = "enable_english_target_translation";
 
+    // Quick Answers.
+    private static final String QUICK_ANSWERS_ENABLED = "quick_answers_enabled";
+
     // Cached values to avoid repeated and redundant JNI operations.
     private static Boolean sEnabled;
     private static Boolean sIsPeekPromoEnabled;
@@ -51,6 +54,7 @@ public class ContextualSearchFieldTrial {
     private static Boolean sDisableAcceptLanguagesForTranslation;
     private static Boolean sDisableKeyboardLanguagesForTranslation;
     private static Boolean sEnableEnglishTaregetTranslation;
+    private static Boolean sIsQuickAnswersEnabled;
 
     /**
      * Don't instantiate.
@@ -195,6 +199,16 @@ public class ContextualSearchFieldTrial {
         return sEnableEnglishTaregetTranslation.booleanValue();
     }
 
+    /**
+     * @return Whether showing "quick answers" in the Bar is enabled.
+     */
+    static boolean isQuickAnswersEnabled() {
+        if (sIsQuickAnswersEnabled == null) {
+            sIsQuickAnswersEnabled = getBooleanParam(QUICK_ANSWERS_ENABLED);
+        }
+        return sIsQuickAnswersEnabled.booleanValue();
+    }
+
     // --------------------------------------------------------------------------------------------
     // Helpers.
     // --------------------------------------------------------------------------------------------