Add LocalFileSyncContext class which wires up profile-owned service and FileSystemContext(s)

webkit/fileapi/file_system_context.h

Index: webkit/fileapi/file_system_context.h
diff --git a/webkit/fileapi/file_system_context.h b/webkit/fileapi/file_system_context.h
index e870ed708fd3349bae71504a71d51e1f9ac8e08f..90b80927ff3f596cda76e45ffdd5071fe9eb773d 100644
--- a/webkit/fileapi/file_system_context.h
+++ b/webkit/fileapi/file_system_context.h
@@ -16,6 +16,7 @@
 #include "webkit/fileapi/file_system_types.h"
 #include "webkit/fileapi/fileapi_export.h"
 #include "webkit/fileapi/task_runner_bound_observer_list.h"
+#include "webkit/fileapi/syncable/syncable_context.h"
 #include "webkit/quota/special_storage_policy.h"
 
 class FilePath;
@@ -41,6 +42,7 @@ class FileSystemURL;
 class IsolatedMountPointProvider;
 class LocalFileChangeTracker;
 class SandboxMountPointProvider;
+class SyncableContext;
 
 struct DefaultContextDeleter;
 
@@ -165,6 +167,11 @@ class FILEAPI_EXPORT FileSystemContext
   LocalFileChangeTracker* change_tracker() { return change_tracker_.get(); }
   void SetLocalFileChangeTracker(scoped_ptr<LocalFileChangeTracker> tracker);
 
+  SyncableContext* syncable_context() { return syncable_context_.get(); }
+  void set_syncable_context(SyncableContext* syncable_context) {
+    syncable_context_ = syncable_context;
+  }
+
   const FilePath& partition_path() const { return partition_path_; }
 
  private:
@@ -193,6 +200,7 @@ class FILEAPI_EXPORT FileSystemContext
 
   // For syncable file systems.
   scoped_ptr<LocalFileChangeTracker> change_tracker_;
+  scoped_refptr<SyncableContext> syncable_context_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(FileSystemContext);
 };