Moved JsonPrefStore to use SequencedWorkerPool

chrome/service/cloud_print/connector_settings_unittest.cc

Index: chrome/service/cloud_print/connector_settings_unittest.cc
diff --git a/chrome/service/cloud_print/connector_settings_unittest.cc b/chrome/service/cloud_print/connector_settings_unittest.cc
index 6aaa6c486eaf2a73ed58b55df525732255a09852..e05acb5eccb24ef0c5997fa076d30144e71ae639 100644
--- a/chrome/service/cloud_print/connector_settings_unittest.cc
+++ b/chrome/service/cloud_print/connector_settings_unittest.cc
@@ -9,6 +9,7 @@
 #include "base/file_util.h"
 #include "base/message_loop.h"
 #include "base/message_loop_proxy.h"
+#include "base/threading/sequenced_worker_pool.h"
 #include "base/scoped_temp_dir.h"
 #include "base/values.h"
 #include "chrome/service/service_process_prefs.h"
@@ -41,11 +42,16 @@ const char kServiceStateContent[] =
 
 class ConnectorSettingsTest : public testing::Test {
  protected:
-  virtual void SetUp() {
+  virtual void SetUp() OVERRIDE {
     ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
+    blocking_pool_ = new base::SequencedWorkerPool(1, "TestBlocking");
     message_loop_proxy_ = base::MessageLoopProxy::current();
   }
 
+  virtual void TearDown() OVERRIDE {
+    blocking_pool_->Shutdown();
+  }
+
   ServiceProcessPrefs* CreateTestFile(const char* json) {
     FilePath file_name = temp_dir_.path().AppendASCII("file.txt");
     file_util::Delete(file_name, false);
@@ -55,7 +61,7 @@ class ConnectorSettingsTest : public testing::Test {
       file_util::WriteFile(file_name, content.c_str(), content.size());
     }
     ServiceProcessPrefs* prefs =
-        new ServiceProcessPrefs(file_name, message_loop_proxy_.get());
+        new ServiceProcessPrefs(file_name, blocking_pool_);
     prefs->ReadPrefs();
     return prefs;
   }
@@ -63,6 +69,7 @@ class ConnectorSettingsTest : public testing::Test {
   ScopedTempDir temp_dir_;
   MessageLoop message_loop_;
   scoped_refptr<base::MessageLoopProxy> message_loop_proxy_;
+  scoped_refptr<base::SequencedWorkerPool> blocking_pool_;
 };
 
 TEST_F(ConnectorSettingsTest, InitFromEmpty) {