Only log Tabs.CountAtStartup for Tabbed mode.

chrome/android/java/src/org/chromium/chrome/browser/customtabs/CustomTabTabPersistencePolicy.java

Index: chrome/android/java/src/org/chromium/chrome/browser/customtabs/CustomTabTabPersistencePolicy.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/customtabs/CustomTabTabPersistencePolicy.java b/chrome/android/java/src/org/chromium/chrome/browser/customtabs/CustomTabTabPersistencePolicy.java
index f3ea43ad3acffa0dd3f6ac86e56f9347f28aee8f..f54e4b12afccd2d9a283693c58b5847db55053c3 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/customtabs/CustomTabTabPersistencePolicy.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/customtabs/CustomTabTabPersistencePolicy.java
@@ -191,6 +191,10 @@ public class CustomTabTabPersistencePolicy implements TabPersistencePolicy {
     }
 
     @Override
+    public void notifyStateLoaded(int tabCountAtStartup) {
+    }
+
+    @Override
     public void destroy() {
         mDestroyed = true;
     }