https://codereview.chromium.org/2715213009 is up for review.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/7529b2aa9b7de2c64e424082b2ee09cad44e27c4

commit 7529b2aa9b7de2c64e424082b2ee09cad44e27c4
Author: avallee <avallee@chromium.org>
Date: Wed Apr 26 11:37:51 2017

Re-enable FocusBeforeNavigation test.

+ Correctly focus the inner WebContents when the attachment frame is
  focused.
+ Enable Enable WebViewFocusInteractiveTest.Focus_FocusBeforeNavigation.
+ Prevent BrowserPluginGuest from unfocusing the guest in oopif mode.

BUG= 672947 
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_site_isolation

Review-Url: https://codereview.chromium.org/2715213009
Cr-Commit-Position: refs/heads/master@{#467296}

[modify] https://crrev.com/7529b2aa9b7de2c64e424082b2ee09cad44e27c4/chrome/browser/apps/guest_view/web_view_interactive_browsertest.cc
[modify] https://crrev.com/7529b2aa9b7de2c64e424082b2ee09cad44e27c4/content/browser/browser_plugin/browser_plugin_guest.cc
[modify] https://crrev.com/7529b2aa9b7de2c64e424082b2ee09cad44e27c4/content/browser/web_contents/web_contents_impl.cc