Remove non-functional base::debug::Alias call

base::debug::Alias is normally used to force the compiler to retain
local variables by making it think that some external data structure
contains a pointer to them. Passing an arbitrary pointer to Alias has no
effect on the optimizer. Removing this use of Alias will help minimize
confusion.

Bug: 756589
Change-Id: Iab183c96748f555e1b364a0ea714e5b84c0b6829
Reviewed-on: https://chromium-review.googlesource.com/794553Reviewed-by: Randy Smith <rdsmith@chromium.org>
Reviewed-by: Łukasz Anforowicz <lukasza@chromium.org>
Commit-Queue: Bruce Dawson <brucedawson@chromium.org>
Cr-Commit-Position: refs/heads/master@{#520692}

content/browser/loader/resource_dispatcher_host_impl.cc

@@ -996,7 +996,6 @@ void ResourceDispatcherHostImpl::CompleteTransfer(
     // Renderer sent transferred_request_request_id and/or
     // transferred_request_child_id that doesn't correspond to an actually
     // transferring loader on the browser side.
-    base::debug::Alias(pending_loader);
     bad_message::ReceivedBadMessage(requester_info->filter(),
                                     bad_message::RDH_REQUEST_NOT_TRANSFERRING);
     return;