Moved JsonPrefStore to use SequencedWorkerPool

chrome/browser/browser_process_impl.cc

Index: chrome/browser/browser_process_impl.cc
diff --git a/chrome/browser/browser_process_impl.cc b/chrome/browser/browser_process_impl.cc
index 2413102463dc80a2db21005401ef0449dd4b2ec2..080cb2a9d43e14fd102261ef456fffb6f7af185c 100644
--- a/chrome/browser/browser_process_impl.cc
+++ b/chrome/browser/browser_process_impl.cc
@@ -16,6 +16,7 @@
 #include "base/file_util.h"
 #include "base/path_service.h"
 #include "base/synchronization/waitable_event.h"
+#include "base/threading/sequenced_worker_pool.h"
 #include "base/threading/thread.h"
 #include "base/threading/thread_restrictions.h"
 #include "chrome/browser/automation/automation_provider_list.h"
@@ -707,11 +708,18 @@ void BrowserProcessImpl::CreateLocalState() {
   DCHECK(!created_local_state_ && local_state_.get() == NULL);
   created_local_state_ = true;
 
+  scoped_refptr<base::SequencedTaskRunner> sequenced_task_runner =

[akalin, 2012/10/17 21:58:19]

is there any way we can pass down the task runner from chrome_browser_main
instead?  It'll make it more obvious that they share the same task runner.

[zel, 2012/10/18 00:31:15]

Done.

+      BrowserThread::GetBlockingPool()->
+        GetSequencedTaskRunnerWithShutdownBehavior(
+            BrowserThread::GetBlockingPool()->GetNamedSequenceToken(
+                "local_state_pool"),
+            base::SequencedWorkerPool::BLOCK_SHUTDOWN);
+
   FilePath local_state_path;
   PathService::Get(chrome::FILE_LOCAL_STATE, &local_state_path);
   local_state_.reset(
       PrefService::CreatePrefService(local_state_path, policy_service(), NULL,
-                                     false));
+                                     false, sequenced_task_runner.get()));
 
   // Initialize the prefs of the local state.
   chrome::RegisterLocalState(local_state_.get());