We will use the new type for the generated IPDL message handler prototype to make sure correct error handling method is called. MozReview-Commit-ID: AzVbApxFGZ0
MozReview-Commit-ID: 4RBeHDyhQgr
--HG-- rename : dom/filehandle/FileHandle.cpp => dom/filehandle/FileHandleBase.cpp rename : dom/filehandle/FileHandle.h => dom/filehandle/FileHandleBase.h rename : dom/filehandle/FileRequest.h => dom/filehandle/FileRequestBase.h rename : dom/filehandle/MutableFile.cpp => dom/filehandle/MutableFileBase.cpp rename : dom/filehandle/MutableFile.h => dom/filehandle/MutableFileBase.h