Disable custom tabs if the feature is disabled in finch experiment

chrome/android/java_staging/src/org/chromium/chrome/browser/DeferredStartupHandler.java

Index: chrome/android/java_staging/src/org/chromium/chrome/browser/DeferredStartupHandler.java
diff --git a/chrome/android/java_staging/src/org/chromium/chrome/browser/DeferredStartupHandler.java b/chrome/android/java_staging/src/org/chromium/chrome/browser/DeferredStartupHandler.java
index a8c27884935d0cfc552c7e20bd9d0574b3300df4..ca88ff44ae4e53beb08d856becc05edff5177e14 100644
--- a/chrome/android/java_staging/src/org/chromium/chrome/browser/DeferredStartupHandler.java
+++ b/chrome/android/java_staging/src/org/chromium/chrome/browser/DeferredStartupHandler.java
@@ -8,6 +8,7 @@ import android.content.Context;
 import android.os.AsyncTask;
 import android.text.TextUtils;
 
+import org.chromium.base.FieldTrialList;
 import org.chromium.base.PowerMonitor;
 import org.chromium.base.ThreadUtils;
 import org.chromium.base.TraceEvent;
@@ -118,6 +119,14 @@ public class DeferredStartupHandler {
 
         startModerateBindingManagementIfNeeded(application);
 
+        String customTabsTrialGroupName = FieldTrialList.findFullName("CustomTabs");
+        if (customTabsTrialGroupName.equals("Disabled")) {
+            ChromePreferenceManager.getInstance(application).setCustomTabsEnabled(false);
+        } else if (customTabsTrialGroupName.equals("Enabled")
+                || customTabsTrialGroupName.equals("DisablePrerender")) {
+            ChromePreferenceManager.getInstance(application).setCustomTabsEnabled(true);
+        }
+
         mDeferredStartupComplete = true;
     }