To be specific, you are saying chrome_pdf::OutOfProcessInstance should implement DidChangeFocus(bool has_focus) and stop blinking the caret in PDF forms?

Yes, that's correct.

Also, selected text should also turn some type of inactive color when losing focus, and back to some active when gaining focus.

This issue has been Available for over a year. If it's no longer important or seems unlikely to be fixed, please consider closing it out. If it is important, please re-triage the issue.

Sorry for the inconvenience if the bug really should have been left as Available. If you change it back, also remove the "Hotlist-Recharge-Cold" label.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/7259b50e35328ecbf4f3b8966e5817a1cfab9952

commit 7259b50e35328ecbf4f3b8966e5817a1cfab9952
Author: Henrique Nakashima <hnakashima@chromium.org>
Date: Thu Nov 16 21:06:17 2017

In PDF viewer, kill form focus when window loses focus.

Bug:  665554 
Change-Id: I96b716d38a51c13a5d94595c2b568f06471a33aa
Reviewed-on: https://chromium-review.googlesource.com/774980
Reviewed-by: dsinclair <dsinclair@chromium.org>
Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
Cr-Commit-Position: refs/heads/master@{#517190}
[modify] https://crrev.com/7259b50e35328ecbf4f3b8966e5817a1cfab9952/pdf/out_of_process_instance.cc
[modify] https://crrev.com/7259b50e35328ecbf4f3b8966e5817a1cfab9952/pdf/out_of_process_instance.h
[modify] https://crrev.com/7259b50e35328ecbf4f3b8966e5817a1cfab9952/pdf/pdf_engine.h
[modify] https://crrev.com/7259b50e35328ecbf4f3b8966e5817a1cfab9952/pdf/pdfium/pdfium_engine.cc
[modify] https://crrev.com/7259b50e35328ecbf4f3b8966e5817a1cfab9952/pdf/pdfium/pdfium_engine.h