Don't set a default value for the NTPContentSuggestionsEnabled policy if ChromeHome is enabled

components/policy/core/common/cloud/user_cloud_policy_manager.cc

Index: components/policy/core/common/cloud/user_cloud_policy_manager.cc
diff --git a/components/policy/core/common/cloud/user_cloud_policy_manager.cc b/components/policy/core/common/cloud/user_cloud_policy_manager.cc
index cf68675075eda63817281a0532829bafc39765b3..2114ddee9d894300dcd2d934a1c12e66c0acf63a 100644
--- a/components/policy/core/common/cloud/user_cloud_policy_manager.cc
+++ b/components/policy/core/common/cloud/user_cloud_policy_manager.cc
@@ -38,7 +38,8 @@ UserCloudPolicyManager::UserCloudPolicyManager(
                          io_task_runner),
       store_(std::move(store)),
       component_policy_cache_path_(component_policy_cache_path),
-      external_data_manager_(std::move(external_data_manager)) {}
+      external_data_manager_(std::move(external_data_manager)),
+      chrome_home_enabled_(false) {}
 
 UserCloudPolicyManager::~UserCloudPolicyManager() {}
 
@@ -106,8 +107,13 @@ void UserCloudPolicyManager::GetChromePolicy(PolicyMap* policy_map) {
   // given that this is an enterprise user.
   // TODO(treib,atwilson): We should just call SetEnterpriseUsersDefaults here,
   // see crbug.com/640950.
+  // Temporary hack: If Chrome Home is enabled, then do not set the default
+  // value for the NTPContentSuggestionsEnabled policy, so that dogfooders
+  // won't see an almost-empty Chrome Home.
+  // TODO(treib): Remove this before M59 branch point. crbug.com/708191
   if (store()->has_policy() &&
-      !policy_map->Get(key::kNTPContentSuggestionsEnabled)) {
+      !policy_map->Get(key::kNTPContentSuggestionsEnabled) &&
+      !chrome_home_enabled_) {
     policy_map->Set(key::kNTPContentSuggestionsEnabled, POLICY_LEVEL_MANDATORY,
                     POLICY_SCOPE_USER, POLICY_SOURCE_ENTERPRISE_DEFAULT,
                     base::MakeUnique<base::Value>(false),