Bug 753990 - Allow appcache to work with a custom cache (profile) folder within a single application, r=michal.novotny

netwerk/cache/nsDiskCacheDeviceSQL.cpp

@@ -629,6 +629,17 @@ nsApplicationCache::GetClientID(nsACString &out)
   return NS_OK;
 }
 
+NS_IMETHODIMP
+nsApplicationCache::GetCacheDirectory(nsILocalFile **out)
+{
+  if (mDevice->BaseDirectory())
+      NS_ADDREF(*out = mDevice->BaseDirectory());
+  else
+      *out = nsnull;
+
+  return NS_OK;
+}
+
 NS_IMETHODIMP
 nsApplicationCache::GetActive(bool *out)
 {
@@ -2361,6 +2372,8 @@ nsOfflineCacheDevice::SetCacheParentDirectory(nsILocalFile *parentDir)
     return;
   }
 
+  mBaseDirectory = parentDir;
+
   // cache dir may not exist, but that's ok
   nsCOMPtr<nsIFile> dir;
   rv = parentDir->Clone(getter_AddRefs(dir));