sync: Support nudges from non-blocking sync types

sync/internal_api/sync_context_proxy_impl_unittest.cc

Index: sync/internal_api/sync_context_proxy_impl_unittest.cc
diff --git a/sync/internal_api/sync_context_proxy_impl_unittest.cc b/sync/internal_api/sync_context_proxy_impl_unittest.cc
index 18f5bbfea5b6352afdd912f7b5b4dbfea252e624..1281e18d905cc4adceba060615309efc714f0261 100644
--- a/sync/internal_api/sync_context_proxy_impl_unittest.cc
+++ b/sync/internal_api/sync_context_proxy_impl_unittest.cc
@@ -11,6 +11,7 @@
 #include "sync/internal_api/public/sync_context.h"
 #include "sync/internal_api/sync_context_proxy_impl.h"
 #include "sync/sessions/model_type_registry.h"
+#include "sync/test/engine/mock_nudge_handler.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace syncer {
@@ -20,7 +21,7 @@ class SyncContextProxyImplTest : public ::testing::Test {
   SyncContextProxyImplTest()
       : sync_task_runner_(base::MessageLoopProxy::current()),
         type_task_runner_(base::MessageLoopProxy::current()),
-        registry_(new ModelTypeRegistry()),
+        registry_(new ModelTypeRegistry(workers_, NULL, &nudge_handler_)),

[stanisc, 2014/07/09 22:35:25]

Consider adding a comment explaining what this NULL is and why it is OK to pass
it.

[rlarocque, 2014/07/10 00:12:29]

It's probably better to just use a real directory.  Did that instead.

         context_proxy_(sync_task_runner_, registry_->AsWeakPtr()) {}
 
   // The sync thread could be shut down at any time without warning.  This
@@ -33,7 +34,11 @@ class SyncContextProxyImplTest : public ::testing::Test {
   base::MessageLoop loop_;
   scoped_refptr<base::SequencedTaskRunner> sync_task_runner_;
   scoped_refptr<base::SequencedTaskRunner> type_task_runner_;
+
+  std::vector<scoped_refptr<ModelSafeWorker> > workers_;
+  MockNudgeHandler nudge_handler_;
   scoped_ptr<ModelTypeRegistry> registry_;
+
   SyncContextProxyImpl context_proxy_;
 };