Reviewed by Brady.
- remove "loading" flag from WebDataSource and code that manages it; it is redundat.
* Loader/WebFrameLoader.m:
(-[WebFrameLoader addPlugInStreamLoader:]):
(-[WebFrameLoader removePlugInStreamLoader:]):
(-[WebFrameLoader addSubresourceLoader:]):
(-[WebFrameLoader removeSubresourceLoader:]):
* WebView/WebDataSource.m:
(-[WebDataSourcePrivate dealloc]):
(-[WebDataSource _setPrimaryLoadComplete:]):
(-[WebDataSource _stopLoading]):
(-[WebDataSource _prepareForLoadStart]):
(-[WebDataSource _startLoading]):
(-[WebDataSource isLoading]):
* WebView/WebDataSourceInternal.h:
git-svn-id: https://svn.webkit.org/repository/webkit/trunk@15986
268f45cc-cd09-0410-ab3c-
d52691b4dbfc