[ew] Add basic classes.

webkit/browser/fileapi/file_system_context.cc

Index: webkit/browser/fileapi/file_system_context.cc
diff --git a/webkit/browser/fileapi/file_system_context.cc b/webkit/browser/fileapi/file_system_context.cc
index 0df0a1dfced0ce0301d6cd098540311e0f717675..c7b2f368a8c7e5a892de434398d3ab6a94a14b41 100644
--- a/webkit/browser/fileapi/file_system_context.cc
+++ b/webkit/browser/fileapi/file_system_context.cc
@@ -278,6 +278,14 @@ FileSystemBackend* FileSystemContext::GetFileSystemBackend(
   return NULL;
 }
 
+WatcherManager* FileSystemContext::GetWatcherManager(
+    FileSystemType type) const {
+  FileSystemBackend* backend = GetFileSystemBackend(type);
+  if (!backend)
+    return NULL;
+  return backend->GetWatcherManager(type);
+}
+
 bool FileSystemContext::IsSandboxFileSystem(FileSystemType type) const {
   FileSystemBackendMap::const_iterator found = backend_map_.find(type);
   return found != backend_map_.end() && found->second->GetQuotaUtil();