Allow fallback from https to http for component update checks.

components/update_client/update_client.cc

Index: components/update_client/update_client.cc
diff --git a/components/update_client/update_client.cc b/components/update_client/update_client.cc
index 86b3dfc7cfe55e5ddc6dca148e456ff73dff898c..8fa551d734992c4d908e55561a2365e8e129685a 100644
--- a/components/update_client/update_client.cc
+++ b/components/update_client/update_client.cc
@@ -52,8 +52,8 @@ CrxUpdateItem::CrxUpdateItem(const CrxUpdateItem& other) = default;
 CrxUpdateItem::~CrxUpdateItem() {
 }
 
-CrxComponent::CrxComponent() : allow_background_download(true) {
-}
+CrxComponent::CrxComponent()
+    : allows_background_download(true), requires_network_encryption(true) {}
 
 CrxComponent::CrxComponent(const CrxComponent& other) = default;