SyncFS: Introduce SyncFileSystemBackend

chrome/browser/chrome_content_browser_client.cc

Index: chrome/browser/chrome_content_browser_client.cc
diff --git a/chrome/browser/chrome_content_browser_client.cc b/chrome/browser/chrome_content_browser_client.cc
index a166d59767779d67377a3bb7b2f5929267d1131d..c670d7cd22e6efe453ca2ea0982aa96dbcc32040 100644
--- a/chrome/browser/chrome_content_browser_client.cc
+++ b/chrome/browser/chrome_content_browser_client.cc
@@ -138,6 +138,8 @@
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/message_center/message_center_util.h"
 #include "webkit/browser/fileapi/external_mount_points.h"
+#include "webkit/browser/fileapi/file_system_options.h"
+#include "webkit/browser/fileapi/syncable/sync_file_system_backend.h"
 #include "webkit/common/webpreferences.h"
 #include "webkit/plugins/plugin_switches.h"
 
@@ -2338,6 +2340,7 @@ void ChromeContentBrowserClient::GetAdditionalAllowedSchemesForFileSystem(
 void ChromeContentBrowserClient::GetAdditionalFileSystemBackends(
     content::BrowserContext* browser_context,
     const base::FilePath& storage_partition_path,
+    const fileapi::FileSystemOptions& options,
     ScopedVector<fileapi::FileSystemBackend>* additional_backends) {
 #if !defined(OS_ANDROID)
   base::SequencedWorkerPool* pool = content::BrowserThread::GetBlockingPool();
@@ -2360,6 +2363,9 @@ void ChromeContentBrowserClient::GetAdditionalFileSystemBackends(
   DCHECK(backend->CanHandleType(fileapi::kFileSystemTypeExternal));
   additional_backends->push_back(backend);
 #endif
+
+  additional_backends->push_back(
+      new sync_file_system::SyncFileSystemBackend(options));
 }
 
 #if defined(OS_POSIX) && !defined(OS_MACOSX)