  
  namespace content {
  class BrowserPpapiHost;
-@@ -55,12 +57,14 @@ class PepperIsolatedFileSystemMessageFilter
+@@ -53,16 +55,20 @@ class PepperIsolatedFileSystemMessageFilter
  
    ~PepperIsolatedFileSystemMessageFilter() override;
  

 
   base::WeakPtrFactory<PepperFlashDRMHost> weak_factory_;
diff --git a/chrome/browser/renderer_host/pepper/pepper_isolated_file_system_message_filter.cc b/chrome/browser/renderer_host/pepper/pepper_isolated_file_system_message_filter.cc
index 40dde88bf86b..3fe0c6d9b816 100644
--- a/chrome/browser/renderer_host/pepper/pepper_isolated_file_system_message_filter.cc
+++ b/chrome/browser/renderer_host/pepper/pepper_isolated_file_system_message_filter.cc
@@ -7,16 +7,20 @@

 
   int32_t OnOpenFileSystem(ppapi::host::HostMessageContext* context,
                            PP_IsolatedFileSystemType_Private type);
+#if 0
   int32_t OpenCrxFileSystem(ppapi::host::HostMessageContext* context);
+#endif
   int32_t OpenPluginPrivateFileSystem(ppapi::host::HostMessageContext* context);
 
   const int render_process_id_;
@@ -73,8 +79,10 @@ class PepperIsolatedFileSystemMessageFilter
   // Not owned by this object.
   ppapi::host::PpapiHost* ppapi_host_;
 
