[TTS] Promote clicks on AMP carousel to a separate Tab.

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 b39e1b0421e16b210fb685dc77ea874cd626ce55..2338ff71cb7eaa6d38bb3732d02d8fbcca93642c 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
@@ -73,6 +73,13 @@ public class ContextualSearchFieldTrial {
     private static final String ENABLE_BAR_OVERLAP_COLLECTION = "enable_bar_overlap_collection";
     private static final String BAR_OVERLAP_SUPPRESSION_ENABLED = "enable_bar_overlap_suppression";
 
+    // Safety switch for disabling online-detection.  Also used to disable detection when running
+    // tests.
+    @VisibleForTesting
+    static final String ONLINE_DETECTION_DISABLED = "disable_online_detection";
+
+    private static final String ENABLE_AMP_AS_SEPARATE_TAB = "enable_amp_as_separate_tab";
+
     // Cached values to avoid repeated and redundant JNI operations.
     private static Boolean sEnabled;
     private static Boolean sDisableSearchTermResolution;
@@ -95,6 +102,8 @@ public class ContextualSearchFieldTrial {
     private static Boolean sIsBarOverlapSuppressionEnabled;
     private static Integer sSuppressionTaps;
     private static Boolean sIsContextualCardsBarIntegrationEnabled;
+    private static Boolean sIsOnlineDetectionDisabled;
+    private static Boolean sIsAmpAsSeparateTabEnabled;
 
     /**
      * Don't instantiate.
@@ -366,6 +375,16 @@ public class ContextualSearchFieldTrial {
         return sSuppressionTaps.intValue();
     }
 
+    /**
+     * @return Whether to auto-promote clicks in the AMP carousel into a separate Tab.
+     */
+    static boolean isAmpAsSeparateTabEnabled() {
+        if (sIsAmpAsSeparateTabEnabled == null) {
+            sIsAmpAsSeparateTabEnabled = getBooleanParam(ENABLE_AMP_AS_SEPARATE_TAB);
+        }
+        return sIsAmpAsSeparateTabEnabled;
+    }
+
     // TODO(donnd): Remove once bar-integration is fully landed if still unused (native only).
     static boolean isContextualCardsBarIntegrationEnabled() {
         if (sIsContextualCardsBarIntegrationEnabled == null) {