Add API to load project from localfs into syncfs.

chrome/browser/extensions/api/developer_private/developer_private_api.h

Index: chrome/browser/extensions/api/developer_private/developer_private_api.h
diff --git a/chrome/browser/extensions/api/developer_private/developer_private_api.h b/chrome/browser/extensions/api/developer_private/developer_private_api.h
index b02ac4bba5c69be63af54082d3ba9b7ca40a9b03..4e271422d5f590b2fced7ffc0ed5288801fd3434 100644
--- a/chrome/browser/extensions/api/developer_private/developer_private_api.h
+++ b/chrome/browser/extensions/api/developer_private/developer_private_api.h
@@ -383,6 +383,23 @@ class DeveloperPrivateLoadProjectToSyncfsFunction
 
    // ExtensionFunction
    virtual bool RunImpl() OVERRIDE;
+
+   void CopyFolder(const base::FilePath::StringType& project_name);
+
+   void CopyFiles(const std::vector<base::FilePath>& paths);
+
+   void CopyFilesCallback(const base::PlatformFileError result);
+
+  private:
+   // Number of pending copy files callbacks.
+   // It should only be modified on the IO Thread.
+   int pendingCallbacksCount_;
+
+   // True only when all the copyFiles job are successful.
+   // It should only be modified on the IO thread.
+   bool success_;
+
+   scoped_refptr<fileapi::FileSystemContext> context_;
 };
 
 class DeveloperPrivateGetProjectsInfoFunction : public AsyncExtensionFunction {
@@ -415,8 +432,6 @@ class DeveloperPrivateLoadProjectFunction : public SyncExtensionFunction {
    virtual bool RunImpl() OVERRIDE;
 };
 
-
-
 }  // namespace api
 
 }  // namespace extensions