FileAPI: Add Initialize() function to FileSystemBackend

chrome/browser/chromeos/fileapi/file_system_backend.h

Index: chrome/browser/chromeos/fileapi/file_system_backend.h
diff --git a/chrome/browser/chromeos/fileapi/file_system_backend.h b/chrome/browser/chromeos/fileapi/file_system_backend.h
index d08c34aba3e23ed5b5f57b21af520a521a971f6b..1ca1050fecda91c4ab2aab4247bdeb00818e9d0f 100644
--- a/chrome/browser/chromeos/fileapi/file_system_backend.h
+++ b/chrome/browser/chromeos/fileapi/file_system_backend.h
@@ -66,7 +66,7 @@ class FileAccessPermissions;
 //
 class FileSystemBackend : public fileapi::ExternalFileSystemBackend {
  public:
-  using fileapi::FileSystemBackend::InitializeFileSystemCallback;
+  using fileapi::FileSystemBackend::OpenFileSystemCallback;
 
   // FileSystemBackend will take an ownership of a |mount_points|
   // reference. On the other hand, |system_mount_points| will be kept as a raw
@@ -90,12 +90,12 @@ class FileSystemBackend : public fileapi::ExternalFileSystemBackend {
 
   // fileapi::FileSystemBackend overrides.
   virtual bool CanHandleType(fileapi::FileSystemType type) const OVERRIDE;
-  virtual void InitializeFileSystem(
+  virtual void Initialize(fileapi::FileSystemContext* context) OVERRIDE;
+  virtual void OpenFileSystem(
       const GURL& origin_url,
       fileapi::FileSystemType type,
       fileapi::OpenFileSystemMode mode,
-      fileapi::FileSystemContext* context,
-      const InitializeFileSystemCallback& callback) OVERRIDE;
+      const OpenFileSystemCallback& callback) OVERRIDE;
   virtual fileapi::FileSystemFileUtil* GetFileUtil(
       fileapi::FileSystemType type) OVERRIDE;
   virtual fileapi::AsyncFileUtil* GetAsyncFileUtil(