Wire up the deleteFileSystem operation.

webkit/fileapi/file_system_mount_point_provider.h

Index: webkit/fileapi/file_system_mount_point_provider.h
diff --git a/webkit/fileapi/file_system_mount_point_provider.h b/webkit/fileapi/file_system_mount_point_provider.h
index b3309bcca0441d566daa42b0758f3c2e8389a392..ba8e3135f99025de0fb45f19c9182bccad4f3b04 100644
--- a/webkit/fileapi/file_system_mount_point_provider.h
+++ b/webkit/fileapi/file_system_mount_point_provider.h
@@ -35,6 +35,8 @@ class FILEAPI_EXPORT FileSystemMountPointProvider {
   // Callback for ValidateFileSystemRoot.
   typedef base::Callback<void(base::PlatformFileError error)>
       ValidateFileSystemCallback;
+  typedef base::Callback<void(base::PlatformFileError error)>
+      DeleteFileSystemCallback;
   virtual ~FileSystemMountPointProvider() {}
 
   // Validates the filesystem for the given |origin_url| and |type|.
@@ -107,6 +109,13 @@ class FILEAPI_EXPORT FileSystemMountPointProvider {
   // Returns the specialized FileSystemQuotaUtil for this mount point.
   // This could return NULL if this mount point does not support quota.
   virtual FileSystemQuotaUtil* GetQuotaUtil() = 0;
+
+  // Deletes the filesystem for the given |origin_url| and |type|.
+  virtual void DeleteFileSystem(
+      const GURL& origin_url,
+      FileSystemType type,
+      FileSystemContext* context,
+      const DeleteFileSystemCallback& callback) const = 0;
 };
 
 // An interface to control external file system access permissions.