From 401f0abaadb546a25d35c1a35c4557c30d736e06 Mon Sep 17 00:00:00 2001 From: alexmos Date: Sun, 6 Dec 2015 02:07:39 -0800 Subject: Implement sequential focus navigation for OOPIF. Pressing or traverses through all focusable elements on a page, descending into the content of any frames that it encounters along the way, including cross-origin frames. This behavior is currently broken with out-of-process frames: remote frames are skipped entirely during focus traversal. This CL puts in the initial plumbing to fix this and allow advancing focus across frames in different processes. When the search for focusable elements in FocusController::advanceFocusInDocumentOrder encounters an