Fix pointer paths (missing subclass)

Bug: 1069567
Change-Id: I4e525f6eab7390777fbc5e609d9f1a57e14730e8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2447389
Auto-Submit: Bartek Nowierski <bartekn@chromium.org>
Commit-Queue: Daniel Cheng <dcheng@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Cr-Commit-Position: refs/heads/master@{#814025}

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

@@ -248,8 +248,8 @@ blink::ShapeResultView::(anonymous struct)::alignment
 # child class ptr fields before they're initialized.
 blink::CacheEntry::next_
 blink::CacheEntry::prev_
-WTF::LruCache::next_
-WTF::LruCache::prev_
+WTF::LruCache::MappedListNodeWithKey::next_
+WTF::LruCache::MappedListNodeWithKey::prev_
 
 # Populated manually - these pointers crash, due to use-after-move.
 gpu::gles2::PassthroughProgramCache::ProgramCacheValue::program_cache_