Open devtools w/ Security panel as the last opened and console available -> Filter field is focused instead of the prompt.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/e91a7d707ea7a42d73ae2886bcd73b7adef00429

commit e91a7d707ea7a42d73ae2886bcd73b7adef00429
Author: pfeldman <pfeldman@chromium.org>
Date: Wed Dec 14 00:38:14 2016

DevTools: do not make main panel unconditionally focused by default.

BUG= 673817 

Review-Url: https://codereview.chromium.org/2574823002
Cr-Commit-Position: refs/heads/master@{#438364}

[modify] https://crrev.com/e91a7d707ea7a42d73ae2886bcd73b7adef00429/third_party/WebKit/LayoutTests/inspector/components/widget-focus-expected.txt
[modify] https://crrev.com/e91a7d707ea7a42d73ae2886bcd73b7adef00429/third_party/WebKit/LayoutTests/inspector/components/widget-focus.html
[modify] https://crrev.com/e91a7d707ea7a42d73ae2886bcd73b7adef00429/third_party/WebKit/Source/devtools/front_end/emulation/AdvancedApp.js
[modify] https://crrev.com/e91a7d707ea7a42d73ae2886bcd73b7adef00429/third_party/WebKit/Source/devtools/front_end/main/SimpleApp.js
[modify] https://crrev.com/e91a7d707ea7a42d73ae2886bcd73b7adef00429/third_party/WebKit/Source/devtools/front_end/screencast/ScreencastApp.js
[modify] https://crrev.com/e91a7d707ea7a42d73ae2886bcd73b7adef00429/third_party/WebKit/Source/devtools/front_end/security/SecurityPanel.js
[modify] https://crrev.com/e91a7d707ea7a42d73ae2886bcd73b7adef00429/third_party/WebKit/Source/devtools/front_end/ui/FilterBar.js
[modify] https://crrev.com/e91a7d707ea7a42d73ae2886bcd73b7adef00429/third_party/WebKit/Source/devtools/front_end/ui/SplitWidget.js