Add pointers that cause run-time issues to manual-fields-to-ignore

There is a handful of pointers that cause crashes when converted to
CheckedPtr. With exception of one, they experience a tag mismatch when
dereferencing/extracting the pointer. And one pointer appears to be
assigned an unallocated address.

These require further invesitagion, but for now blocklisting them, so
that we can get perf numbers.

Bug: 1069567
Change-Id: I8fb0f371161d08b25a1ffec9ac55596b86994185
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2358933Reviewed-by: Łukasz Anforowicz <lukasza@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Commit-Queue: Bartek Nowierski <bartekn@chromium.org>
Cr-Commit-Position: refs/heads/master@{#803447}

tools/clang/rewrite_raw_ptr_fields/manual-fields-to-ignore.txt

@@ -165,3 +165,18 @@ blink::(anonymous namespace)::ThreadMarker::creating_thread_
 blink::ControlKey::name_
 performance_manager::frame_priority::BoostingVoteAggregator::Edge::src_
 performance_manager::frame_priority::BoostingVoteAggregator::Edge::dst_
+
+# Populated manually - these pointers crash when converted to CheckedPtr.
+# It's mostly mismatching tag, unless otherwise specified.
+# Under investigation.
+base::internal::UnretainedWrapper::ptr_
+blink::NGPhysicalContainerFragment::buffer_
+blink::DisplayItem::client_
+cc::FrameSequenceMetrics::throughput_ukm_reporter_
+cc::(anonymous namespace)::RasterTaskImpl::tile_tracing_id_
+content::MediaPlayerId::render_frame_host
+content::RenderViewImpl::webview_
+mojo::core::WatcherDispatcher::last_watch_to_block_arming_
+net::IOBuffer::data_
+safe_browsing::RemoteSafeBrowsingDatabaseManager::ClientRequest::client_
+x11::ReadBuffer::fds  # Assigned address appears unallocated