[cros] Return needs_new_plan() = true only if data plan is supported.

chrome/browser/chromeos/cros/network_library.h

Index: chrome/browser/chromeos/cros/network_library.h
diff --git a/chrome/browser/chromeos/cros/network_library.h b/chrome/browser/chromeos/cros/network_library.h
index 5b8b2cd16dd2b89de98223f59bd574c203c51963..7c82706e8649985d0b5eca3dd2bbf5dfafee8227 100644
--- a/chrome/browser/chromeos/cros/network_library.h
+++ b/chrome/browser/chromeos/cros/network_library.h
@@ -616,7 +616,8 @@ class CellularNetwork : public WirelessNetwork {
     return state_ == STATE_PORTAL;
   }
   bool needs_new_plan() const {
-    return restricted_pool() && connected() && activated();
+    return SupportsDataPlan() && restricted_pool()
+        && connected() && activated();
   }
   const std::string& operator_name() const { return operator_name_; }
   const std::string& operator_code() const { return operator_code_; }