Some minor fixes for Background Fetch

content/browser/storage_partition_impl_map.cc

Index: content/browser/storage_partition_impl_map.cc
diff --git a/content/browser/storage_partition_impl_map.cc b/content/browser/storage_partition_impl_map.cc
index 9222265acbaf29d2a125cf00f2e387464e5e6b0f..35508b75c172ac7d4ff81fe1c542a6f57231751e 100644
--- a/content/browser/storage_partition_impl_map.cc
+++ b/content/browser/storage_partition_impl_map.cc
@@ -25,6 +25,7 @@
 #include "build/build_config.h"
 #include "content/browser/appcache/appcache_interceptor.h"
 #include "content/browser/appcache/chrome_appcache_service.h"
+#include "content/browser/background_fetch/background_fetch_context.h"
 #include "content/browser/blob_storage/chrome_blob_storage_context.h"
 #include "content/browser/fileapi/browser_file_system_helper.h"
 #include "content/browser/loader/resource_request_info_impl.h"
@@ -600,6 +601,12 @@ void StoragePartitionImplMap::PostCreateInitialization(
                    partition->GetServiceWorkerContext(),
                    browser_context_->GetResourceContext()));
 
+    BrowserThread::PostTask(
+        BrowserThread::IO, FROM_HERE,
+        base::Bind(&BackgroundFetchContext::InitializeOnIOThread,
+                   partition->GetBackgroundFetchContext(),
+                   base::RetainedRef(partition->GetURLRequestContext())));
+
     // We do not call InitializeURLRequestContext() for media contexts because,
     // other than the HTTP cache, the media contexts share the same backing
     // objects as their associated "normal" request context.  Thus, the previous